Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the maximum foot per second speed where time to feet ratio is 22.1 at 55 degrees?

### Inputs:
table_name: table, columns: ['Gun', 'm/v ft/s', 'Shell (lb)', 'Time to ft (m) at 25° (seconds)', 'Time to ft (m) at 40° (seconds)', 'Time to ft (m) at 55° (seconds)', 'Max. height (ft)']

### Response:
SELECT MAX m/v ft/s FROM table WHERE Time to ft (m) at 55° (seconds) = 22.1