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Finding the Fourth Proportional to 516.10, 773.51 and 272.47

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Solution

The fourth proportional to 516.10, 773.51 and 272.47 is: 408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.10 : 773.51 = 272.47 : x
  2. Step 2: Convert to fraction form
    516.10/773.51 = 272.47/x
  3. Step 3: Cross multiply
    516.10x = 773.51 × 272.47
  4. Step 4: Simplify right side
    516.10x = 210,758.27
  5. Step 5: Solve for x
    x = 210,758.27/516.10
  6. Step 6: Final answer
    x = 408.37

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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.