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Finding the Third Proportional to 331.75 and 479.88

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Solution

The third proportional to 331.75 and 479.88 is: 694.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.75 : 479.88 = 479.88 : x
  2. Step 2: Convert to fraction form
    331.75/479.88 = 479.88/x
  3. Step 3: Cross multiply
    331.75x = 479.88 × 479.88
  4. Step 4: Simplify right side
    331.75x = 230,280.02
  5. Step 5: Solve for x
    x = 230,280.02/331.75
  6. Step 6: Final answer
    x = 694.14

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.