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Finding the Fourth Proportional to 372.90, 559.47 and 112.93

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Solution

The fourth proportional to 372.90, 559.47 and 112.93 is: 169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.90 : 559.47 = 112.93 : x
  2. Step 2: Convert to fraction form
    372.90/559.47 = 112.93/x
  3. Step 3: Cross multiply
    372.90x = 559.47 × 112.93
  4. Step 4: Simplify right side
    372.90x = 63,179.97
  5. Step 5: Solve for x
    x = 63,179.97/372.90
  6. Step 6: Final answer
    x = 169.43

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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.