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Finding the Fourth Proportional to 263.38, 395.13 and 107.22

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Solution

The fourth proportional to 263.38, 395.13 and 107.22 is: 160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.38 : 395.13 = 107.22 : x
  2. Step 2: Convert to fraction form
    263.38/395.13 = 107.22/x
  3. Step 3: Cross multiply
    263.38x = 395.13 × 107.22
  4. Step 4: Simplify right side
    263.38x = 42,365.84
  5. Step 5: Solve for x
    x = 42,365.84/263.38
  6. Step 6: Final answer
    x = 160.85

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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.