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Finding the Fourth Proportional to 286.39, 395.13 and 168.32

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Solution

The fourth proportional to 286.39, 395.13 and 168.32 is: 232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.39 : 395.13 = 168.32 : x
  2. Step 2: Convert to fraction form
    286.39/395.13 = 168.32/x
  3. Step 3: Cross multiply
    286.39x = 395.13 × 168.32
  4. Step 4: Simplify right side
    286.39x = 66,508.28
  5. Step 5: Solve for x
    x = 66,508.28/286.39
  6. Step 6: Final answer
    x = 232.23

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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.