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Finding the Fourth Proportional to 349.13, 481.41 and 275.63

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Solution

The fourth proportional to 349.13, 481.41 and 275.63 is: 380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.13 : 481.41 = 275.63 : x
  2. Step 2: Convert to fraction form
    349.13/481.41 = 275.63/x
  3. Step 3: Cross multiply
    349.13x = 481.41 × 275.63
  4. Step 4: Simplify right side
    349.13x = 132,688.63
  5. Step 5: Solve for x
    x = 132,688.63/349.13
  6. Step 6: Final answer
    x = 380.05

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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.