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Finding the Fourth Proportional to 499.39, 747.54 and 425.58

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Solution

The fourth proportional to 499.39, 747.54 and 425.58 is: 637.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.39 : 747.54 = 425.58 : x
  2. Step 2: Convert to fraction form
    499.39/747.54 = 425.58/x
  3. Step 3: Cross multiply
    499.39x = 747.54 × 425.58
  4. Step 4: Simplify right side
    499.39x = 318,138.07
  5. Step 5: Solve for x
    x = 318,138.07/499.39
  6. Step 6: Final answer
    x = 637.05

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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.