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Finding the Fourth Proportional to 252.88, 349.30 and 203.94

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Solution

The fourth proportional to 252.88, 349.30 and 203.94 is: 281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.88 : 349.30 = 203.94 : x
  2. Step 2: Convert to fraction form
    252.88/349.30 = 203.94/x
  3. Step 3: Cross multiply
    252.88x = 349.30 × 203.94
  4. Step 4: Simplify right side
    252.88x = 71,236.24
  5. Step 5: Solve for x
    x = 71,236.24/252.88
  6. Step 6: Final answer
    x = 281.70

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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.