A six foot tall man casts a shadow of 4.0 feet at the same instant that a tree casts a shadow of 24 feet. How tall is the tree

Question

A six foot tall man casts a shadow of 4.0 feet at the same instant that a tree casts a shadow of 24 feet. How tall is the tree?

Answer 1

height of man height of tree

------------------- = ------------------

length of his shadow length of tree's shadow

You have 3 of the 4 pieces of information in the proportion. Use that to solve for the height of the tree.