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Finding the Third Proportional to 308.38 and 473.88

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Solution

The third proportional to 308.38 and 473.88 is: 728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.38 : 473.88 = 473.88 : x
  2. Step 2: Convert to fraction form
    308.38/473.88 = 473.88/x
  3. Step 3: Cross multiply
    308.38x = 473.88 × 473.88
  4. Step 4: Simplify right side
    308.38x = 224,557.52
  5. Step 5: Solve for x
    x = 224,557.52/308.38
  6. Step 6: Final answer
    x = 728.20

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.