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Finding the Fourth Proportional to 234.24, 324.96 and 225.60

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Solution

The fourth proportional to 234.24, 324.96 and 225.60 is: 312.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.24 : 324.96 = 225.60 : x
  2. Step 2: Convert to fraction form
    234.24/324.96 = 225.60/x
  3. Step 3: Cross multiply
    234.24x = 324.96 × 225.60
  4. Step 4: Simplify right side
    234.24x = 73,310.98
  5. Step 5: Solve for x
    x = 73,310.98/234.24
  6. Step 6: Final answer
    x = 312.97

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.