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Finding the Fourth Proportional to 349.11, 481.75 and 275.60

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Solution

The fourth proportional to 349.11, 481.75 and 275.60 is: 380.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.11 : 481.75 = 275.60 : x
  2. Step 2: Convert to fraction form
    349.11/481.75 = 275.60/x
  3. Step 3: Cross multiply
    349.11x = 481.75 × 275.60
  4. Step 4: Simplify right side
    349.11x = 132,770.82
  5. Step 5: Solve for x
    x = 132,770.82/349.11
  6. Step 6: Final answer
    x = 380.31

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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.