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Finding the Fourth Proportional to 528.55, 793.02 and 425.27

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Solution

The fourth proportional to 528.55, 793.02 and 425.27 is: 638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.55 : 793.02 = 425.27 : x
  2. Step 2: Convert to fraction form
    528.55/793.02 = 425.27/x
  3. Step 3: Cross multiply
    528.55x = 793.02 × 425.27
  4. Step 4: Simplify right side
    528.55x = 337,247.62
  5. Step 5: Solve for x
    x = 337,247.62/528.55
  6. Step 6: Final answer
    x = 638.06

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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.