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Finding the Fourth Proportional to 539.99, 750.08 and 531.61

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Solution

The fourth proportional to 539.99, 750.08 and 531.61 is: 738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.99 : 750.08 = 531.61 : x
  2. Step 2: Convert to fraction form
    539.99/750.08 = 531.61/x
  3. Step 3: Cross multiply
    539.99x = 750.08 × 531.61
  4. Step 4: Simplify right side
    539.99x = 398,745.50
  5. Step 5: Solve for x
    x = 398,745.50/539.99
  6. Step 6: Final answer
    x = 738.44

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.