# SOLUTION: if y varies inversely as the cube of x, and y=64 when x=3,Find the value of x when y=216.

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 Question 414298: if y varies inversely as the cube of x, and y=64 when x=3,Find the value of x when y=216. Found 2 solutions by josmiceli, ewatrrr:Answer by josmiceli(9671)   (Show Source): You can put this solution on YOUR website!Note: is called the constant of proportionality ----------- Answer by ewatrrr(10682)   (Show Source): You can put this solution on YOUR website! ``` Hi y varies inversely as the cube of x OR y = k/x^3 y=64 when x=3 64 = k/27 k = 1728 Find the value of x when y = 216. 216 = 1728/x^3 x^3 = 8 x = 2 ```