Question

Find the mean proportional between 9 and 16.

Answer 1

Answer:

Let the mean proportion between 9 and 16 be x

ans-

9:x::x:16

9/x=x/16

by cross multiplication we will get,

9×16 =x^2

144= x^2

√144= x

12=x

There for the mean proportion between 9 and 16

Answer 2

The mean proportional of 9 and 16 is 12.

Step-by-step explanation:

Mean proportional means the squareroot of the product of two numbers.

So,

√9*16 = √144 = 12