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Finding the Fourth Proportional to 462.98, 693.90 and 270.20

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Solution

The fourth proportional to 462.98, 693.90 and 270.20 is: 404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.98 : 693.90 = 270.20 : x
  2. Step 2: Convert to fraction form
    462.98/693.90 = 270.20/x
  3. Step 3: Cross multiply
    462.98x = 693.90 × 270.20
  4. Step 4: Simplify right side
    462.98x = 187,491.78
  5. Step 5: Solve for x
    x = 187,491.78/462.98
  6. Step 6: Final answer
    x = 404.97

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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.