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Finding the Fourth Proportional to 133.27, 198.88 and 118.23

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Solution

The fourth proportional to 133.27, 198.88 and 118.23 is: 176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.27 : 198.88 = 118.23 : x
  2. Step 2: Convert to fraction form
    133.27/198.88 = 118.23/x
  3. Step 3: Cross multiply
    133.27x = 198.88 × 118.23
  4. Step 4: Simplify right side
    133.27x = 23,514.55
  5. Step 5: Solve for x
    x = 23,514.55/133.27
  6. Step 6: Final answer
    x = 176.44

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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.