Triangles PQS and TRS are similar triangles.PS = 730 + 256 = 986 ft.RT = 480 ft.The height of the waterfall: PQ = xThe proportion: x : 986 = 480 : 730730 x = 480 * 986730 x = 473,280x = 473,280 : 730x = 648.32 ≈ 648 ft.Answer: The height of the waterfall is 648 ft.