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Finding the Fourth Proportional to 232.25, 348.37 and 78.17

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Solution

The fourth proportional to 232.25, 348.37 and 78.17 is: 117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.25 : 348.37 = 78.17 : x
  2. Step 2: Convert to fraction form
    232.25/348.37 = 78.17/x
  3. Step 3: Cross multiply
    232.25x = 348.37 × 78.17
  4. Step 4: Simplify right side
    232.25x = 27,230.15
  5. Step 5: Solve for x
    x = 27,230.15/232.25
  6. Step 6: Final answer
    x = 117.25

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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.