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

### Instruction:
Which Ratio has an in × in of 17 × 22?

### Inputs:
table_name: table, columns: ['Name', 'in × in', 'mm × mm', 'Ratio', 'Similar ISO A size']

### Response:
SELECT Ratio FROM table WHERE in × in = 17 × 22