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Finding the Fourth Proportional to 349.14, 481.98 and 331.32

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Solution

The fourth proportional to 349.14, 481.98 and 331.32 is: 457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.14 : 481.98 = 331.32 : x
  2. Step 2: Convert to fraction form
    349.14/481.98 = 331.32/x
  3. Step 3: Cross multiply
    349.14x = 481.98 × 331.32
  4. Step 4: Simplify right side
    349.14x = 159,689.61
  5. Step 5: Solve for x
    x = 159,689.61/349.14
  6. Step 6: Final answer
    x = 457.38

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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.