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Finding the Fourth Proportional to 349.16, 481.97 and 238.69

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Solution

The fourth proportional to 349.16, 481.97 and 238.69 is: 329.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.16 : 481.97 = 238.69 : x
  2. Step 2: Convert to fraction form
    349.16/481.97 = 238.69/x
  3. Step 3: Cross multiply
    349.16x = 481.97 × 238.69
  4. Step 4: Simplify right side
    349.16x = 115,041.42
  5. Step 5: Solve for x
    x = 115,041.42/349.16
  6. Step 6: Final answer
    x = 329.48

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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.