Rose's mother bought her and her doll matching outfits that were proportional to one another. Rose's dress had a hemline of 40 inches and the doll's hemline was 18 inches. If the material used for the doll's dress was 81 square inches, what was the width of Rose's dress?
well if you think of the proportions, then you can take 81/18 = 4.5 where 4.5 is the ratio of the hem to the square inches. Then since they are proportionate(the dress of Rose and the doll), then you are able to use 4.5 as the dilation value, and thus multiply 40 (Rose's hemline) by (the dilation) 4.5 and that = 180 inches. You could also set up a proportion if that is easier to see.
