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Finding the Fourth Proportional to 118.50, 163.37 and 104.48

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Solution

The fourth proportional to 118.50, 163.37 and 104.48 is: 144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.50 : 163.37 = 104.48 : x
  2. Step 2: Convert to fraction form
    118.50/163.37 = 104.48/x
  3. Step 3: Cross multiply
    118.50x = 163.37 × 104.48
  4. Step 4: Simplify right side
    118.50x = 17,067.56
  5. Step 5: Solve for x
    x = 17,067.56/118.50
  6. Step 6: Final answer
    x = 144.03

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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.