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Finding the Third Proportional to 266.91 and 351.28

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Solution

The third proportional to 266.91 and 351.28 is: 462.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.91 : 351.28 = 351.28 : x
  2. Step 2: Convert to fraction form
    266.91/351.28 = 351.28/x
  3. Step 3: Cross multiply
    266.91x = 351.28 × 351.28
  4. Step 4: Simplify right side
    266.91x = 123,398.52
  5. Step 5: Solve for x
    x = 123,398.52/266.91
  6. Step 6: Final answer
    x = 462.33

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.