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Finding the Fourth Proportional to 133.32, 198.87 and 130.44

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Solution

The fourth proportional to 133.32, 198.87 and 130.44 is: 194.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.32 : 198.87 = 130.44 : x
  2. Step 2: Convert to fraction form
    133.32/198.87 = 130.44/x
  3. Step 3: Cross multiply
    133.32x = 198.87 × 130.44
  4. Step 4: Simplify right side
    133.32x = 25,940.60
  5. Step 5: Solve for x
    x = 25,940.60/133.32
  6. Step 6: Final answer
    x = 194.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.