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Finding the Fourth Proportional to 274.97, 379.62 and 205.41

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Solution

The fourth proportional to 274.97, 379.62 and 205.41 is: 283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.97 : 379.62 = 205.41 : x
  2. Step 2: Convert to fraction form
    274.97/379.62 = 205.41/x
  3. Step 3: Cross multiply
    274.97x = 379.62 × 205.41
  4. Step 4: Simplify right side
    274.97x = 77,979.17
  5. Step 5: Solve for x
    x = 77,979.17/274.97
  6. Step 6: Final answer
    x = 283.59

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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.