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Finding the Fourth Proportional to 349.62, 480.94 and 324.56

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Solution

The fourth proportional to 349.62, 480.94 and 324.56 is: 446.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.62 : 480.94 = 324.56 : x
  2. Step 2: Convert to fraction form
    349.62/480.94 = 324.56/x
  3. Step 3: Cross multiply
    349.62x = 480.94 × 324.56
  4. Step 4: Simplify right side
    349.62x = 156,091.57
  5. Step 5: Solve for x
    x = 156,091.57/349.62
  6. Step 6: Final answer
    x = 446.47

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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.