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Finding the Fourth Proportional to 349.90, 482.68 and 271.73

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Solution

The fourth proportional to 349.90, 482.68 and 271.73 is: 374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.90 : 482.68 = 271.73 : x
  2. Step 2: Convert to fraction form
    349.90/482.68 = 271.73/x
  3. Step 3: Cross multiply
    349.90x = 482.68 × 271.73
  4. Step 4: Simplify right side
    349.90x = 131,158.64
  5. Step 5: Solve for x
    x = 131,158.64/349.90
  6. Step 6: Final answer
    x = 374.85

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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.