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Finding the Fourth Proportional to 512.55, 769.14 and 508.44

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Solution

The fourth proportional to 512.55, 769.14 and 508.44 is: 762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.55 : 769.14 = 508.44 : x
  2. Step 2: Convert to fraction form
    512.55/769.14 = 508.44/x
  3. Step 3: Cross multiply
    512.55x = 769.14 × 508.44
  4. Step 4: Simplify right side
    512.55x = 391,061.54
  5. Step 5: Solve for x
    x = 391,061.54/512.55
  6. Step 6: Final answer
    x = 762.97

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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.