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Finding the Fourth Proportional to 180.81, 249.62 and 125.60

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Solution

The fourth proportional to 180.81, 249.62 and 125.60 is: 173.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.81 : 249.62 = 125.60 : x
  2. Step 2: Convert to fraction form
    180.81/249.62 = 125.60/x
  3. Step 3: Cross multiply
    180.81x = 249.62 × 125.60
  4. Step 4: Simplify right side
    180.81x = 31,350.40
  5. Step 5: Solve for x
    x = 31,350.40/180.81
  6. Step 6: Final answer
    x = 173.39

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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.