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Finding the Fourth Proportional to 349.18, 481.72 and 217.96

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Solution

The fourth proportional to 349.18, 481.72 and 217.96 is: 300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.18 : 481.72 = 217.96 : x
  2. Step 2: Convert to fraction form
    349.18/481.72 = 217.96/x
  3. Step 3: Cross multiply
    349.18x = 481.72 × 217.96
  4. Step 4: Simplify right side
    349.18x = 104,995.69
  5. Step 5: Solve for x
    x = 104,995.69/349.18
  6. Step 6: Final answer
    x = 300.69

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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.