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Finding the Fourth Proportional to 372.85, 559.32 and 129.32

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Solution

The fourth proportional to 372.85, 559.32 and 129.32 is: 194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.85 : 559.32 = 129.32 : x
  2. Step 2: Convert to fraction form
    372.85/559.32 = 129.32/x
  3. Step 3: Cross multiply
    372.85x = 559.32 × 129.32
  4. Step 4: Simplify right side
    372.85x = 72,331.26
  5. Step 5: Solve for x
    x = 72,331.26/372.85
  6. Step 6: Final answer
    x = 194.00

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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.