Find the product of three geometric means between 4 and `1//4`

Find the product o three geometric means between 4 and 1/4.

Insert three Geometric means between 1 and 256.

If m is the A.M. of two distinct real numbers l and n""(""l ,""n"">""1) and G1, G2 and G3 are three geometric means between l and n, then G1 4+2G2 4+G3 4 equals, (1) 4l^2 mn (2) 4l^m^2 mn (3) 4l m n^2 (4) 4l^2m^2n^2

The two geometric means between the numbers 1 and 64 are

if m is the AM of two distinct real number l and n and G_1,G_2 and G_3 are three geometric means between l and n , then (G_1^4 + G_2^4 +G_3^4 ) equals to

If H_(1) , H_(2) are two harmonic means between two positive numbers a and b , (a != b) , A and G are the arithmetic and geometric means between a and b , then (H_(2) + H_(1))/(H_(2) H_(1)) is

If a be one A.M and G_1 and G_2 be then geometric means between b and c then G_1^3+G_2^3=