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Finding the Fourth Proportional to 193.22, 290.10 and 132.20

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Solution

The fourth proportional to 193.22, 290.10 and 132.20 is: 198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.22 : 290.10 = 132.20 : x
  2. Step 2: Convert to fraction form
    193.22/290.10 = 132.20/x
  3. Step 3: Cross multiply
    193.22x = 290.10 × 132.20
  4. Step 4: Simplify right side
    193.22x = 38,351.22
  5. Step 5: Solve for x
    x = 38,351.22/193.22
  6. Step 6: Final answer
    x = 198.48

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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.