There is one way to know if there is a proportional relationship between distance and time. Find the ratio of each data pair given. If the ratio is the same for all, then, yes, there is a proportional relationship.
Pair 1: 765 ft ÷ 1/4 min = 3060 ft/min
Pair 2: 1,530 ft ÷ 1/2 min = 3060 ft/min
Pair 3: 3060 ft ÷ 1 min = 3060 ft/min
Thus, there is a proportional relationship.