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Finding the Fourth Proportional to 349.76, 481.44 and 251.36

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Solution

The fourth proportional to 349.76, 481.44 and 251.36 is: 345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.76 : 481.44 = 251.36 : x
  2. Step 2: Convert to fraction form
    349.76/481.44 = 251.36/x
  3. Step 3: Cross multiply
    349.76x = 481.44 × 251.36
  4. Step 4: Simplify right side
    349.76x = 121,014.76
  5. Step 5: Solve for x
    x = 121,014.76/349.76
  6. Step 6: Final answer
    x = 345.99

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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.