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Finding the Fourth Proportional to 201.22, 301.28 and 132.53

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Solution

The fourth proportional to 201.22, 301.28 and 132.53 is: 198.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.22 : 301.28 = 132.53 : x
  2. Step 2: Convert to fraction form
    201.22/301.28 = 132.53/x
  3. Step 3: Cross multiply
    201.22x = 301.28 × 132.53
  4. Step 4: Simplify right side
    201.22x = 39,926.47
  5. Step 5: Solve for x
    x = 39,926.47/201.22
  6. Step 6: Final answer
    x = 198.42

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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.