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Finding the Fourth Proportional to 263.41, 393.23 and 226.85

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Solution

The fourth proportional to 263.41, 393.23 and 226.85 is: 338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.41 : 393.23 = 226.85 : x
  2. Step 2: Convert to fraction form
    263.41/393.23 = 226.85/x
  3. Step 3: Cross multiply
    263.41x = 393.23 × 226.85
  4. Step 4: Simplify right side
    263.41x = 89,202.83
  5. Step 5: Solve for x
    x = 89,202.83/263.41
  6. Step 6: Final answer
    x = 338.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.