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Finding the Fourth Proportional to 462.52, 693.10 and 215.80

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Solution

The fourth proportional to 462.52, 693.10 and 215.80 is: 323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.52 : 693.10 = 215.80 : x
  2. Step 2: Convert to fraction form
    462.52/693.10 = 215.80/x
  3. Step 3: Cross multiply
    462.52x = 693.10 × 215.80
  4. Step 4: Simplify right side
    462.52x = 149,570.98
  5. Step 5: Solve for x
    x = 149,570.98/462.52
  6. Step 6: Final answer
    x = 323.38

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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.