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Finding the Fourth Proportional to 499.03, 747.77 and 426.60

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Solution

The fourth proportional to 499.03, 747.77 and 426.60 is: 639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.03 : 747.77 = 426.60 : x
  2. Step 2: Convert to fraction form
    499.03/747.77 = 426.60/x
  3. Step 3: Cross multiply
    499.03x = 747.77 × 426.60
  4. Step 4: Simplify right side
    499.03x = 318,996.55
  5. Step 5: Solve for x
    x = 318,996.55/499.03
  6. Step 6: Final answer
    x = 639.24

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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.