Explanation:

- The given number pair is 216 : 343. Let's find their significance:

- 216 is \(6^3\).

- 343 is \(7^3\).

- This pair relates cubes of consecutive integers (6 and 7).

- Option 1: 8 : 27

- 8 is \(2^3\).

- 27 is \(3^3\).

- Both are cubes of consecutive numbers 2 and 3.

- Option 2: 27 : 125

- 27 is \(3^3\).

- 125 is \(5^3\).

- These are cubes but not of consecutive numbers (3 and 5).

- Option 3: 216 : 727

- 727 is not a cube.

- Option 4: 1009 : 1331

- 1331 is \(11^3\).

- 1009 is not a cube.