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Finding the Fourth Proportional to 499.04, 747.28 and 417.68

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Solution

The fourth proportional to 499.04, 747.28 and 417.68 is: 625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.04 : 747.28 = 417.68 : x
  2. Step 2: Convert to fraction form
    499.04/747.28 = 417.68/x
  3. Step 3: Cross multiply
    499.04x = 747.28 × 417.68
  4. Step 4: Simplify right side
    499.04x = 312,123.91
  5. Step 5: Solve for x
    x = 312,123.91/499.04
  6. Step 6: Final answer
    x = 625.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.