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Finding the Fourth Proportional to 324.58, 487.17 and 132.22

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Solution

The fourth proportional to 324.58, 487.17 and 132.22 is: 198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.58 : 487.17 = 132.22 : x
  2. Step 2: Convert to fraction form
    324.58/487.17 = 132.22/x
  3. Step 3: Cross multiply
    324.58x = 487.17 × 132.22
  4. Step 4: Simplify right side
    324.58x = 64,413.62
  5. Step 5: Solve for x
    x = 64,413.62/324.58
  6. Step 6: Final answer
    x = 198.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.