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Finding the Fourth Proportional to 185.75, 256.35 and 112.07

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Solution

The fourth proportional to 185.75, 256.35 and 112.07 is: 154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.75 : 256.35 = 112.07 : x
  2. Step 2: Convert to fraction form
    185.75/256.35 = 112.07/x
  3. Step 3: Cross multiply
    185.75x = 256.35 × 112.07
  4. Step 4: Simplify right side
    185.75x = 28,727.86
  5. Step 5: Solve for x
    x = 28,727.86/185.75
  6. Step 6: Final answer
    x = 154.66

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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.