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Finding the Fourth Proportional to 180.60, 249.09 and 143.73

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Solution

The fourth proportional to 180.60, 249.09 and 143.73 is: 198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.60 : 249.09 = 143.73 : x
  2. Step 2: Convert to fraction form
    180.60/249.09 = 143.73/x
  3. Step 3: Cross multiply
    180.60x = 249.09 × 143.73
  4. Step 4: Simplify right side
    180.60x = 35,801.71
  5. Step 5: Solve for x
    x = 35,801.71/180.60
  6. Step 6: Final answer
    x = 198.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.