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Finding the Fourth Proportional to 226.45, 338.95 and 118.09

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Solution

The fourth proportional to 226.45, 338.95 and 118.09 is: 176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.45 : 338.95 = 118.09 : x
  2. Step 2: Convert to fraction form
    226.45/338.95 = 118.09/x
  3. Step 3: Cross multiply
    226.45x = 338.95 × 118.09
  4. Step 4: Simplify right side
    226.45x = 40,026.61
  5. Step 5: Solve for x
    x = 40,026.61/226.45
  6. Step 6: Final answer
    x = 176.76

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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.