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Finding the Fourth Proportional to 349.21, 481.64 and 230.97

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Solution

The fourth proportional to 349.21, 481.64 and 230.97 is: 318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.21 : 481.64 = 230.97 : x
  2. Step 2: Convert to fraction form
    349.21/481.64 = 230.97/x
  3. Step 3: Cross multiply
    349.21x = 481.64 × 230.97
  4. Step 4: Simplify right side
    349.21x = 111,244.39
  5. Step 5: Solve for x
    x = 111,244.39/349.21
  6. Step 6: Final answer
    x = 318.56

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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.