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Finding the Fourth Proportional to 151.55, 227.33 and 79.55

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Solution

The fourth proportional to 151.55, 227.33 and 79.55 is: 119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.55 : 227.33 = 79.55 : x
  2. Step 2: Convert to fraction form
    151.55/227.33 = 79.55/x
  3. Step 3: Cross multiply
    151.55x = 227.33 × 79.55
  4. Step 4: Simplify right side
    151.55x = 18,084.57
  5. Step 5: Solve for x
    x = 18,084.57/151.55
  6. Step 6: Final answer
    x = 119.33

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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.