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Finding the Fourth Proportional to 272.27, 375.71 and 198.47

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Solution

The fourth proportional to 272.27, 375.71 and 198.47 is: 273.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.27 : 375.71 = 198.47 : x
  2. Step 2: Convert to fraction form
    272.27/375.71 = 198.47/x
  3. Step 3: Cross multiply
    272.27x = 375.71 × 198.47
  4. Step 4: Simplify right side
    272.27x = 74,564.29
  5. Step 5: Solve for x
    x = 74,564.29/272.27
  6. Step 6: Final answer
    x = 273.87

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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.