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Finding the Fourth Proportional to 227.68, 342.02 and 136.55

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Solution

The fourth proportional to 227.68, 342.02 and 136.55 is: 205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.68 : 342.02 = 136.55 : x
  2. Step 2: Convert to fraction form
    227.68/342.02 = 136.55/x
  3. Step 3: Cross multiply
    227.68x = 342.02 × 136.55
  4. Step 4: Simplify right side
    227.68x = 46,704.03
  5. Step 5: Solve for x
    x = 46,704.03/227.68
  6. Step 6: Final answer
    x = 205.13

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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.