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Finding the Fourth Proportional to 502.22, 753.65 and 213.66

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Solution

The fourth proportional to 502.22, 753.65 and 213.66 is: 320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.22 : 753.65 = 213.66 : x
  2. Step 2: Convert to fraction form
    502.22/753.65 = 213.66/x
  3. Step 3: Cross multiply
    502.22x = 753.65 × 213.66
  4. Step 4: Simplify right side
    502.22x = 161,022.97
  5. Step 5: Solve for x
    x = 161,022.97/502.22
  6. Step 6: Final answer
    x = 320.62

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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.