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Finding the Fourth Proportional to 516.34, 773.88 and 272.71

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Solution

The fourth proportional to 516.34, 773.88 and 272.71 is: 408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.34 : 773.88 = 272.71 : x
  2. Step 2: Convert to fraction form
    516.34/773.88 = 272.71/x
  3. Step 3: Cross multiply
    516.34x = 773.88 × 272.71
  4. Step 4: Simplify right side
    516.34x = 211,044.81
  5. Step 5: Solve for x
    x = 211,044.81/516.34
  6. Step 6: Final answer
    x = 408.73

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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.