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Finding the Fourth Proportional to 118.48, 162.84 and 104.58

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Solution

The fourth proportional to 118.48, 162.84 and 104.58 is: 143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.48 : 162.84 = 104.58 : x
  2. Step 2: Convert to fraction form
    118.48/162.84 = 104.58/x
  3. Step 3: Cross multiply
    118.48x = 162.84 × 104.58
  4. Step 4: Simplify right side
    118.48x = 17,029.14
  5. Step 5: Solve for x
    x = 17,029.14/118.48
  6. Step 6: Final answer
    x = 143.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.