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Finding the Third Proportional to 331.50 and 503.25

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Solution

The third proportional to 331.50 and 503.25 is: 763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.50 : 503.25 = 503.25 : x
  2. Step 2: Convert to fraction form
    331.50/503.25 = 503.25/x
  3. Step 3: Cross multiply
    331.50x = 503.25 × 503.25
  4. Step 4: Simplify right side
    331.50x = 253,260.56
  5. Step 5: Solve for x
    x = 253,260.56/331.50
  6. Step 6: Final answer
    x = 763.98

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.