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Given that 49, X, and 81 are consecutive terms of a geometric progression, find:
A. The value of x
B. Geometric mean

Correct answer:

x =  63
m =  63

Step-by-step explanation:

a1=49 a3=81  a2 = x = q a1 a3 = q2 a1  q=a3/a1=81/49=79=1721.2857  x=q a1=1.2857 49=63
m=3a1 x a3=349 63 81=63

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