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Finding the Fourth Proportional to 372.93, 559.62 and 129.63

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Solution

The fourth proportional to 372.93, 559.62 and 129.63 is: 194.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.93 : 559.62 = 129.63 : x
  2. Step 2: Convert to fraction form
    372.93/559.62 = 129.63/x
  3. Step 3: Cross multiply
    372.93x = 559.62 × 129.63
  4. Step 4: Simplify right side
    372.93x = 72,543.54
  5. Step 5: Solve for x
    x = 72,543.54/372.93
  6. Step 6: Final answer
    x = 194.52

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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.