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Finding the Fourth Proportional to 349.38, 481.49 and 238.67

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Solution

The fourth proportional to 349.38, 481.49 and 238.67 is: 328.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.38 : 481.49 = 238.67 : x
  2. Step 2: Convert to fraction form
    349.38/481.49 = 238.67/x
  3. Step 3: Cross multiply
    349.38x = 481.49 × 238.67
  4. Step 4: Simplify right side
    349.38x = 114,917.22
  5. Step 5: Solve for x
    x = 114,917.22/349.38
  6. Step 6: Final answer
    x = 328.92

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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.