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Finding the Fourth Proportional to 234.45, 353.34 and 223.47

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Solution

The fourth proportional to 234.45, 353.34 and 223.47 is: 336.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.45 : 353.34 = 223.47 : x
  2. Step 2: Convert to fraction form
    234.45/353.34 = 223.47/x
  3. Step 3: Cross multiply
    234.45x = 353.34 × 223.47
  4. Step 4: Simplify right side
    234.45x = 78,960.89
  5. Step 5: Solve for x
    x = 78,960.89/234.45
  6. Step 6: Final answer
    x = 336.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.