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Step-1

Title: Proportion

Grade: 8-a Lesson: S4-L7

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the Mean proportional between 9 and 16.
2	Step	Given mean Proportion	\$ 9 , 16\$
3	Clue	Mean Proportional Formula	\$\sqrt (a \times b)\$
4	Step	First, multiply a & b	\$\sqrt(9 \times 16) = \sqrt(144)\$
5	Step	The square root of the resulting term to get the mean proportional	\$\sqrt(144)\$ = \$12\$
6	SumUp	Can you summarize what you’ve understood in the above steps?
7	Choice.A	14 is incorrect; the mean proportional isn’t the average but the square root of the product	14
8	Choice.B	Incorrect. The mean proportional isn’t the average but the square root of the product	15
9	Choice.C	This option is correct. It represents the mean proportional between 9 and 16	12
10	Choice.D	6 is incorrect. The mean proportional is the square root of the product, not half	6
11	Answer	Option	C
12	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find the Mean proportional between 9 and 16.

Step

Given mean Proportion

\$ 9 , 16\$

Clue

Mean Proportional Formula

\$\sqrt (a \times b)\$

Step

First, multiply a & b

\$\sqrt(9 \times 16) = \sqrt(144)\$

Step

The square root of the resulting term to get the mean proportional

\$\sqrt(144)\$ = \$12\$

SumUp

Can you summarize what you’ve understood in the above steps?

Choice.A

14 is incorrect; the mean proportional isn’t the average but the square root of the product

Choice.B

Incorrect. The mean proportional isn’t the average but the square root of the product

Choice.C

This option is correct. It represents the mean proportional between 9 and 16

Choice.D

6 is incorrect. The mean proportional is the square root of the product, not half

Answer

Option

SumUp

Can you summarize what you’ve understood in the above steps?