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Finding the Fourth Proportional to 272.43, 375.59 and 197.70

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Solution

The fourth proportional to 272.43, 375.59 and 197.70 is: 272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.43 : 375.59 = 197.70 : x
  2. Step 2: Convert to fraction form
    272.43/375.59 = 197.70/x
  3. Step 3: Cross multiply
    272.43x = 375.59 × 197.70
  4. Step 4: Simplify right side
    272.43x = 74,253.15
  5. Step 5: Solve for x
    x = 74,253.15/272.43
  6. Step 6: Final answer
    x = 272.56

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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.