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Finding the Fourth Proportional to 134.87, 187.11 and 133.45

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Solution

The fourth proportional to 134.87, 187.11 and 133.45 is: 185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.87 : 187.11 = 133.45 : x
  2. Step 2: Convert to fraction form
    134.87/187.11 = 133.45/x
  3. Step 3: Cross multiply
    134.87x = 187.11 × 133.45
  4. Step 4: Simplify right side
    134.87x = 24,969.36
  5. Step 5: Solve for x
    x = 24,969.36/134.87
  6. Step 6: Final answer
    x = 185.14

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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.