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Finding the Fourth Proportional to 488.34, 731.42 and 344.70

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Solution

The fourth proportional to 488.34, 731.42 and 344.70 is: 516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.34 : 731.42 = 344.70 : x
  2. Step 2: Convert to fraction form
    488.34/731.42 = 344.70/x
  3. Step 3: Cross multiply
    488.34x = 731.42 × 344.70
  4. Step 4: Simplify right side
    488.34x = 252,120.47
  5. Step 5: Solve for x
    x = 252,120.47/488.34
  6. Step 6: Final answer
    x = 516.28

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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.