To find the height of the basketball player's son, we need to calculate \( \frac{1}{4} \) of the father's height, which is \( 6 \frac{2}{3} \) feet.
First, convert \( 6 \frac{2}{3} \) to an improper fraction: \[ 6 \frac{2}{3} = 6 + \frac{2}{3} = \frac{18}{3} + \frac{2}{3} = \frac{20}{3} \]
Now, we need to calculate \( \frac{1}{4} \) of \( \frac{20}{3} \): \[ \text{Height of the son} = \frac{1}{4} \times \frac{20}{3} = \frac{20}{12} = \frac{5}{3} \]
Now convert \( \frac{5}{3} \) back to a mixed number: \[ \frac{5}{3} = 1 \frac{2}{3} \]
So, the height of the son is \( 1 \frac{2}{3} \) feet.
Therefore, the answer is: 1 and 2 thirds ft.