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Finding the Third Proportional to 249.75 and 402

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Solution

The third proportional to 249.75 and 402 is: 647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.75 : 402 = 402 : x
  2. Step 2: Convert to fraction form
    249.75/402 = 402/x
  3. Step 3: Cross multiply
    249.75x = 402 × 402
  4. Step 4: Simplify right side
    249.75x = 161,604
  5. Step 5: Solve for x
    x = 161,604/249.75
  6. Step 6: Final answer
    x = 647.06

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These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.