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Finding the Fourth Proportional to 372.20, 516.11 and 359.91

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Solution

The fourth proportional to 372.20, 516.11 and 359.91 is: 499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.20 : 516.11 = 359.91 : x
  2. Step 2: Convert to fraction form
    372.20/516.11 = 359.91/x
  3. Step 3: Cross multiply
    372.20x = 516.11 × 359.91
  4. Step 4: Simplify right side
    372.20x = 185,751.35
  5. Step 5: Solve for x
    x = 185,751.35/372.20
  6. Step 6: Final answer
    x = 499.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.