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Finding the Fourth Proportional to 372.75, 559.17 and 371.45

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Solution

The fourth proportional to 372.75, 559.17 and 371.45 is: 557.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.75 : 559.17 = 371.45 : x
  2. Step 2: Convert to fraction form
    372.75/559.17 = 371.45/x
  3. Step 3: Cross multiply
    372.75x = 559.17 × 371.45
  4. Step 4: Simplify right side
    372.75x = 207,700.90
  5. Step 5: Solve for x
    x = 207,700.90/372.75
  6. Step 6: Final answer
    x = 557.21

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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.