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Finding the Fourth Proportional to 372.11, 512.60 and 301.97

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Solution

The fourth proportional to 372.11, 512.60 and 301.97 is: 415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.11 : 512.60 = 301.97 : x
  2. Step 2: Convert to fraction form
    372.11/512.60 = 301.97/x
  3. Step 3: Cross multiply
    372.11x = 512.60 × 301.97
  4. Step 4: Simplify right side
    372.11x = 154,789.59
  5. Step 5: Solve for x
    x = 154,789.59/372.11
  6. Step 6: Final answer
    x = 415.98

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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.