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Finding the Fourth Proportional to 502.46, 693.24 and 281.38

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Solution

The fourth proportional to 502.46, 693.24 and 281.38 is: 388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.46 : 693.24 = 281.38 : x
  2. Step 2: Convert to fraction form
    502.46/693.24 = 281.38/x
  3. Step 3: Cross multiply
    502.46x = 693.24 × 281.38
  4. Step 4: Simplify right side
    502.46x = 195,063.87
  5. Step 5: Solve for x
    x = 195,063.87/502.46
  6. Step 6: Final answer
    x = 388.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.