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Finding the Fourth Proportional to 537.92, 807.15 and 213.56

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Solution

The fourth proportional to 537.92, 807.15 and 213.56 is: 320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.92 : 807.15 = 213.56 : x
  2. Step 2: Convert to fraction form
    537.92/807.15 = 213.56/x
  3. Step 3: Cross multiply
    537.92x = 807.15 × 213.56
  4. Step 4: Simplify right side
    537.92x = 172,374.95
  5. Step 5: Solve for x
    x = 172,374.95/537.92
  6. Step 6: Final answer
    x = 320.45

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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.