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Finding the Fourth Proportional to 477.92, 720.50 and 473.78

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Solution

The fourth proportional to 477.92, 720.50 and 473.78 is: 714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.92 : 720.50 = 473.78 : x
  2. Step 2: Convert to fraction form
    477.92/720.50 = 473.78/x
  3. Step 3: Cross multiply
    477.92x = 720.50 × 473.78
  4. Step 4: Simplify right side
    477.92x = 341,358.49
  5. Step 5: Solve for x
    x = 341,358.49/477.92
  6. Step 6: Final answer
    x = 714.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.