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Finding the Third Proportional to 229 and 257

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Solution

The third proportional to 229 and 257 is: 288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    229 : 257 = 257 : x
  2. Step 2: Convert to fraction form
    229/257 = 257/x
  3. Step 3: Cross multiply
    229x = 257 × 257
  4. Step 4: Simplify right side
    229x = 66,049
  5. Step 5: Solve for x
    x = 66,049/229
  6. Step 6: Final answer
    x = 288.42

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.