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Finding the Fourth Proportional to 349.16, 481.92 and 216.42

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Solution

The fourth proportional to 349.16, 481.92 and 216.42 is: 298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.16 : 481.92 = 216.42 : x
  2. Step 2: Convert to fraction form
    349.16/481.92 = 216.42/x
  3. Step 3: Cross multiply
    349.16x = 481.92 × 216.42
  4. Step 4: Simplify right side
    349.16x = 104,297.13
  5. Step 5: Solve for x
    x = 104,297.13/349.16
  6. Step 6: Final answer
    x = 298.71

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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.