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Finding the Fourth Proportional to 250.61, 375.65 and 111.85

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Solution

The fourth proportional to 250.61, 375.65 and 111.85 is: 167.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.61 : 375.65 = 111.85 : x
  2. Step 2: Convert to fraction form
    250.61/375.65 = 111.85/x
  3. Step 3: Cross multiply
    250.61x = 375.65 × 111.85
  4. Step 4: Simplify right side
    250.61x = 42,016.60
  5. Step 5: Solve for x
    x = 42,016.60/250.61
  6. Step 6: Final answer
    x = 167.66

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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.