Final answer:
Hank needs to hit the fifth home run a distance of 400ft to average 360ft for his five home runs.
Step-by-step explanation:
If Hank's average distance on his first four home runs was 350ft, we need to find out the total distance of those four home runs combined. Four times 350ft gives us 1400ft. To average 360ft for five home runs, Hank needs a total of 1800ft (since 5 times 360ft equals 1800ft). Subtract the current total distance of 1400ft from the desired total of 1800ft to find the distance needed on the fifth home run.
1800ft - 1400ft = 400ft.
Therefore, Hank needs to hit the fifth home run a distance of 400ft to have an average of 360ft for his five home runs.