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Finding the Fourth Proportional to 180.65, 249.41 and 118.60

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Solution

The fourth proportional to 180.65, 249.41 and 118.60 is: 163.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.65 : 249.41 = 118.60 : x
  2. Step 2: Convert to fraction form
    180.65/249.41 = 118.60/x
  3. Step 3: Cross multiply
    180.65x = 249.41 × 118.60
  4. Step 4: Simplify right side
    180.65x = 29,579.70
  5. Step 5: Solve for x
    x = 29,579.70/180.65
  6. Step 6: Final answer
    x = 163.74

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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.