Question

Find the mean proportion between 81 and 121

Answer 1

hi please check the answer

Answer 2

Answer:

Mean proportion between 81 and 121 is 99

Step-by-step explanation:

Let the mean proportion between 81 and 121 is X

According to proportionality rule,

81 : X: : X : 121

Product of 1st term and 4th term =Product of 2nd term term and 3rd term

81*121=X * X

$9^{2}$×$11^{2}$=$x^{2}$

X = 9 × 11

X =99