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Finding the Fourth Proportional to 502.30, 753.06 and 213.94

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Solution

The fourth proportional to 502.30, 753.06 and 213.94 is: 320.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.30 : 753.06 = 213.94 : x
  2. Step 2: Convert to fraction form
    502.30/753.06 = 213.94/x
  3. Step 3: Cross multiply
    502.30x = 753.06 × 213.94
  4. Step 4: Simplify right side
    502.30x = 161,109.66
  5. Step 5: Solve for x
    x = 161,109.66/502.30
  6. Step 6: Final answer
    x = 320.74

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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.