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Finding the Fourth Proportional to 308.27, 425.39 and 168.38

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Solution

The fourth proportional to 308.27, 425.39 and 168.38 is: 232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.27 : 425.39 = 168.38 : x
  2. Step 2: Convert to fraction form
    308.27/425.39 = 168.38/x
  3. Step 3: Cross multiply
    308.27x = 425.39 × 168.38
  4. Step 4: Simplify right side
    308.27x = 71,627.17
  5. Step 5: Solve for x
    x = 71,627.17/308.27
  6. Step 6: Final answer
    x = 232.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.