The area of a projected picture on a movie screen varies directly as the square of the distance from the projector to the screen.

The area of a projected picture on a movie screen varies directly as the square of the distance from the projector to the screen. If a distance of 20 feet produces a picture with an area of 68 square feet, what distance produces an area of 120 square feet? Round to the nearest tenth of a foot.

Work this custom problem about variation and proportion using the techniques you learned in this module.