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Finding the Fourth Proportional to 514.62, 710.18 and 281.76

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Solution

The fourth proportional to 514.62, 710.18 and 281.76 is: 388.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.62 : 710.18 = 281.76 : x
  2. Step 2: Convert to fraction form
    514.62/710.18 = 281.76/x
  3. Step 3: Cross multiply
    514.62x = 710.18 × 281.76
  4. Step 4: Simplify right side
    514.62x = 200,100.32
  5. Step 5: Solve for x
    x = 200,100.32/514.62
  6. Step 6: Final answer
    x = 388.83

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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.