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Finding the Fourth Proportional to 234.05, 350.85 and 209.75

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Solution

The fourth proportional to 234.05, 350.85 and 209.75 is: 314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.05 : 350.85 = 209.75 : x
  2. Step 2: Convert to fraction form
    234.05/350.85 = 209.75/x
  3. Step 3: Cross multiply
    234.05x = 350.85 × 209.75
  4. Step 4: Simplify right side
    234.05x = 73,590.79
  5. Step 5: Solve for x
    x = 73,590.79/234.05
  6. Step 6: Final answer
    x = 314.42

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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.