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Finding the Fourth Proportional to 372.97, 559.45 and 153.69

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Solution

The fourth proportional to 372.97, 559.45 and 153.69 is: 230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.97 : 559.45 = 153.69 : x
  2. Step 2: Convert to fraction form
    372.97/559.45 = 153.69/x
  3. Step 3: Cross multiply
    372.97x = 559.45 × 153.69
  4. Step 4: Simplify right side
    372.97x = 85,981.87
  5. Step 5: Solve for x
    x = 85,981.87/372.97
  6. Step 6: Final answer
    x = 230.53

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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.