Step-5

Title: Ratio & Proportion

Grade: 1300-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 third proportional 12 and 24 .

2

Step

Let us take the third proportion is

\$x\$

3

Step

We can write the above numbers in the proportional form
(a :b :: b :c)

12 : 24::24 : x

4

Step

Let us find x value

x = \$ (24 times 24)/12\$

\$ x = 48\$

5

SumUp

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

6

Choice.A

The option is wrong; the third number is more significant than the second

12

7

Choice.B

It’s correct, as it’s the third proportional value for 12 and 24

48

8

Choice.C

This statement is wrong as it doesn’t match the calculated value of 48

22

9

Choice.D

Incorrect. It does not match the estimated value of 48

36

10

Answer

Option

B

11

SumUp

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


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