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Finding the Fourth Proportional to 286.38, 395.24 and 168.39

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Solution

The fourth proportional to 286.38, 395.24 and 168.39 is: 232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.38 : 395.24 = 168.39 : x
  2. Step 2: Convert to fraction form
    286.38/395.24 = 168.39/x
  3. Step 3: Cross multiply
    286.38x = 395.24 × 168.39
  4. Step 4: Simplify right side
    286.38x = 66,553.62
  5. Step 5: Solve for x
    x = 66,553.62/286.38
  6. Step 6: Final answer
    x = 232.40

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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.