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Finding the Fourth Proportional to 240.45, 358.11 and 225.46

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Solution

The fourth proportional to 240.45, 358.11 and 225.46 is: 335.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.45 : 358.11 = 225.46 : x
  2. Step 2: Convert to fraction form
    240.45/358.11 = 225.46/x
  3. Step 3: Cross multiply
    240.45x = 358.11 × 225.46
  4. Step 4: Simplify right side
    240.45x = 80,739.48
  5. Step 5: Solve for x
    x = 80,739.48/240.45
  6. Step 6: Final answer
    x = 335.78

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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.