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Finding the Fourth Proportional to 532.55, 739.07 and 519.50

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Solution

The fourth proportional to 532.55, 739.07 and 519.50 is: 720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.55 : 739.07 = 519.50 : x
  2. Step 2: Convert to fraction form
    532.55/739.07 = 519.50/x
  3. Step 3: Cross multiply
    532.55x = 739.07 × 519.50
  4. Step 4: Simplify right side
    532.55x = 383,946.87
  5. Step 5: Solve for x
    x = 383,946.87/532.55
  6. Step 6: Final answer
    x = 720.96

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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.