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Finding the Fourth Proportional to 134.74, 187.11 and 133.66

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Solution

The fourth proportional to 134.74, 187.11 and 133.66 is: 185.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.74 : 187.11 = 133.66 : x
  2. Step 2: Convert to fraction form
    134.74/187.11 = 133.66/x
  3. Step 3: Cross multiply
    134.74x = 187.11 × 133.66
  4. Step 4: Simplify right side
    134.74x = 25,008.45
  5. Step 5: Solve for x
    x = 25,008.45/134.74
  6. Step 6: Final answer
    x = 185.61

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.