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Finding the Fourth Proportional to 372.91, 559.02 and 251.21

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Solution

The fourth proportional to 372.91, 559.02 and 251.21 is: 376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.91 : 559.02 = 251.21 : x
  2. Step 2: Convert to fraction form
    372.91/559.02 = 251.21/x
  3. Step 3: Cross multiply
    372.91x = 559.02 × 251.21
  4. Step 4: Simplify right side
    372.91x = 140,431.41
  5. Step 5: Solve for x
    x = 140,431.41/372.91
  6. Step 6: Final answer
    x = 376.58

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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.