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Finding the Fourth Proportional to 185.14, 277.17 and 112.78

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Solution

The fourth proportional to 185.14, 277.17 and 112.78 is: 168.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.14 : 277.17 = 112.78 : x
  2. Step 2: Convert to fraction form
    185.14/277.17 = 112.78/x
  3. Step 3: Cross multiply
    185.14x = 277.17 × 112.78
  4. Step 4: Simplify right side
    185.14x = 31,259.23
  5. Step 5: Solve for x
    x = 31,259.23/185.14
  6. Step 6: Final answer
    x = 168.84

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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.