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Finding the Fourth Proportional to 197.85, 272.87 and 174.56

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Solution

The fourth proportional to 197.85, 272.87 and 174.56 is: 240.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.85 : 272.87 = 174.56 : x
  2. Step 2: Convert to fraction form
    197.85/272.87 = 174.56/x
  3. Step 3: Cross multiply
    197.85x = 272.87 × 174.56
  4. Step 4: Simplify right side
    197.85x = 47,630.60
  5. Step 5: Solve for x
    x = 47,630.60/197.85
  6. Step 6: Final answer
    x = 240.74

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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.