Question

find the mean proportion between the 81 and 121​

Answer 1

Step-by-step explanation:

A= 9

c= 81

b=?

a:b=b:c

9:b=b:81

b^2 =729

b = \√{729}

b=27.

So, the mean proportion=27.

Hope it helps you!!!

Answer 2

Step-by-step explanation:

81:x:121

81/x=x/121

x^2=9801

$x = \sqrt{9801}$

x=99