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Finding the Fourth Proportional to 349.47, 481.83 and 279.63

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Solution

The fourth proportional to 349.47, 481.83 and 279.63 is: 385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.47 : 481.83 = 279.63 : x
  2. Step 2: Convert to fraction form
    349.47/481.83 = 279.63/x
  3. Step 3: Cross multiply
    349.47x = 481.83 × 279.63
  4. Step 4: Simplify right side
    349.47x = 134,734.12
  5. Step 5: Solve for x
    x = 134,734.12/349.47
  6. Step 6: Final answer
    x = 385.54

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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.