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Finding the Fourth Proportional to 118.37, 176.67 and 104.85

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Solution

The fourth proportional to 118.37, 176.67 and 104.85 is: 156.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.37 : 176.67 = 104.85 : x
  2. Step 2: Convert to fraction form
    118.37/176.67 = 104.85/x
  3. Step 3: Cross multiply
    118.37x = 176.67 × 104.85
  4. Step 4: Simplify right side
    118.37x = 18,523.85
  5. Step 5: Solve for x
    x = 18,523.85/118.37
  6. Step 6: Final answer
    x = 156.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.