An interior designer sketches a design for a rectangular rug. The dimensions of a sketch are 4 inches by 7.5 in. The dimensions of the actual rug will be ten times the dimensions of the drawing, so the scale of the drawing is 1:10. How many times the area of the sketch is the actual area of the rug? Which figures in the problem are similar? What are the dimensions? How can proportions help you find the dimensions of the actual rug?