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Finding the Fourth Proportional to 226.20, 311.58 and 174.36

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Solution

The fourth proportional to 226.20, 311.58 and 174.36 is: 240.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.20 : 311.58 = 174.36 : x
  2. Step 2: Convert to fraction form
    226.20/311.58 = 174.36/x
  3. Step 3: Cross multiply
    226.20x = 311.58 × 174.36
  4. Step 4: Simplify right side
    226.20x = 54,327.09
  5. Step 5: Solve for x
    x = 54,327.09/226.20
  6. Step 6: Final answer
    x = 240.17

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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.