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Finding the Fourth Proportional to 185.89, 256.47 and 112.18

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Solution

The fourth proportional to 185.89, 256.47 and 112.18 is: 154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.89 : 256.47 = 112.18 : x
  2. Step 2: Convert to fraction form
    185.89/256.47 = 112.18/x
  3. Step 3: Cross multiply
    185.89x = 256.47 × 112.18
  4. Step 4: Simplify right side
    185.89x = 28,770.80
  5. Step 5: Solve for x
    x = 28,770.80/185.89
  6. Step 6: Final answer
    x = 154.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.