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Finding the Fourth Proportional to 154.69, 230.65 and 151.96

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Solution

The fourth proportional to 154.69, 230.65 and 151.96 is: 226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.69 : 230.65 = 151.96 : x
  2. Step 2: Convert to fraction form
    154.69/230.65 = 151.96/x
  3. Step 3: Cross multiply
    154.69x = 230.65 × 151.96
  4. Step 4: Simplify right side
    154.69x = 35,049.57
  5. Step 5: Solve for x
    x = 35,049.57/154.69
  6. Step 6: Final answer
    x = 226.58

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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.