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Finding the Fourth Proportional to 132.02, 198.23 and 104.61

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Solution

The fourth proportional to 132.02, 198.23 and 104.61 is: 157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.02 : 198.23 = 104.61 : x
  2. Step 2: Convert to fraction form
    132.02/198.23 = 104.61/x
  3. Step 3: Cross multiply
    132.02x = 198.23 × 104.61
  4. Step 4: Simplify right side
    132.02x = 20,736.84
  5. Step 5: Solve for x
    x = 20,736.84/132.02
  6. Step 6: Final answer
    x = 157.07

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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.