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Finding the Fourth Proportional to 349.11, 481.41 and 217.89

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Solution

The fourth proportional to 349.11, 481.41 and 217.89 is: 300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.11 : 481.41 = 217.89 : x
  2. Step 2: Convert to fraction form
    349.11/481.41 = 217.89/x
  3. Step 3: Cross multiply
    349.11x = 481.41 × 217.89
  4. Step 4: Simplify right side
    349.11x = 104,894.42
  5. Step 5: Solve for x
    x = 104,894.42/349.11
  6. Step 6: Final answer
    x = 300.46

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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.