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Finding the Fourth Proportional to 499.01, 748.90 and 252.47

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Solution

The fourth proportional to 499.01, 748.90 and 252.47 is: 378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.01 : 748.90 = 252.47 : x
  2. Step 2: Convert to fraction form
    499.01/748.90 = 252.47/x
  3. Step 3: Cross multiply
    499.01x = 748.90 × 252.47
  4. Step 4: Simplify right side
    499.01x = 189,074.78
  5. Step 5: Solve for x
    x = 189,074.78/499.01
  6. Step 6: Final answer
    x = 378.90

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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.