Question

Find the mean proportional between 25 and 36.explain step by step

A) 20
B) 30
C) 40​

Answer 1

Step-by-step explanation:

let third proportion be x

25:36::36:x

25x=36×36

x=36×36/25

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Answer 2

Answer:

Option B) 30

Step-by-step explanation:

If b is the mean proportion between a and c.

Then  a : b : : b : c ⇒ a / b = b / c ⇒ b² = ac ----------- Equation 1

Let the mean proportion between 25 and 36 is x,

Here, a=25, b=x and c=36.

Substituting the values in Equation 1 we get ;

x² = 25 * 36

x² = 900

x = √900

x = 30

Therefore, the mean proportional between 25 and 36​ is 30.

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