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Finding the Fourth Proportional to 155.27, 231.84 and 151.17

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Solution

The fourth proportional to 155.27, 231.84 and 151.17 is: 225.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.27 : 231.84 = 151.17 : x
  2. Step 2: Convert to fraction form
    155.27/231.84 = 151.17/x
  3. Step 3: Cross multiply
    155.27x = 231.84 × 151.17
  4. Step 4: Simplify right side
    155.27x = 35,045.34
  5. Step 5: Solve for x
    x = 35,045.34/155.27
  6. Step 6: Final answer
    x = 225.71

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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.