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Step-2

Title: Ratio & Proportion

Grade: 8-a Lesson: S2-L8

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the third proportion to 10 , 5.
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)	\$10 : 5 :: 5 : x\$
4	Hint	\$a/b :: b/c\$
5	Step	Here a = 10 , b = 5 ,c = x
6	Step	Let us find the x value.	x = \$ (5 \times 5)/10\$ x = \$2.5\$
7		Answer	A

Step

Type

Explanation

Answer

Problem

Find the third proportion to 10 , 5.

Step

Let us take the third proportion is

\$x\$

Step

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

\$10 : 5 :: 5 : x\$

Hint

\$a/b :: b/c\$

Step

Here a = 10 , b = 5 ,c = x

Step

Let us find the x value.

x = \$ (5 \times 5)/10\$
x = \$2.5\$

Answer