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Finding the Fourth Proportional to 151.26, 226.89 and 74.18

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Solution

The fourth proportional to 151.26, 226.89 and 74.18 is: 111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.26 : 226.89 = 74.18 : x
  2. Step 2: Convert to fraction form
    151.26/226.89 = 74.18/x
  3. Step 3: Cross multiply
    151.26x = 226.89 × 74.18
  4. Step 4: Simplify right side
    151.26x = 16,830.70
  5. Step 5: Solve for x
    x = 16,830.70/151.26
  6. Step 6: Final answer
    x = 111.27

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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.