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Finding the Fourth Proportional to 349.88, 481.48 and 347.76

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Solution

The fourth proportional to 349.88, 481.48 and 347.76 is: 478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.88 : 481.48 = 347.76 : x
  2. Step 2: Convert to fraction form
    349.88/481.48 = 347.76/x
  3. Step 3: Cross multiply
    349.88x = 481.48 × 347.76
  4. Step 4: Simplify right side
    349.88x = 167,439.48
  5. Step 5: Solve for x
    x = 167,439.48/349.88
  6. Step 6: Final answer
    x = 478.56

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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.