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Finding the Fourth Proportional to 516.86, 712.92 and 359.42

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Solution

The fourth proportional to 516.86, 712.92 and 359.42 is: 495.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.86 : 712.92 = 359.42 : x
  2. Step 2: Convert to fraction form
    516.86/712.92 = 359.42/x
  3. Step 3: Cross multiply
    516.86x = 712.92 × 359.42
  4. Step 4: Simplify right side
    516.86x = 256,234.14
  5. Step 5: Solve for x
    x = 256,234.14/516.86
  6. Step 6: Final answer
    x = 495.76

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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.