4:4

Do you mean one of these?

• Simplify the ratio 4:4 → 1:1
• As a fraction → 4/4 = 1
• As a decimal → 1.0
• As a percent → 100%

If you meant something else (e.g., a problem statement like “Chapter 4, problem 4” or a time format), please share the full context or text and I’ll help step by step.