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Finding the Fourth Proportional to 372.11, 559.03 and 218.14

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Solution

The fourth proportional to 372.11, 559.03 and 218.14 is: 327.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.11 : 559.03 = 218.14 : x
  2. Step 2: Convert to fraction form
    372.11/559.03 = 218.14/x
  3. Step 3: Cross multiply
    372.11x = 559.03 × 218.14
  4. Step 4: Simplify right side
    372.11x = 121,946.80
  5. Step 5: Solve for x
    x = 121,946.80/372.11
  6. Step 6: Final answer
    x = 327.72

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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.