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Finding the Fourth Proportional to 197.60, 272.54 and 194.57

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Solution

The fourth proportional to 197.60, 272.54 and 194.57 is: 268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.60 : 272.54 = 194.57 : x
  2. Step 2: Convert to fraction form
    197.60/272.54 = 194.57/x
  3. Step 3: Cross multiply
    197.60x = 272.54 × 194.57
  4. Step 4: Simplify right side
    197.60x = 53,025.77
  5. Step 5: Solve for x
    x = 53,025.77/197.60
  6. Step 6: Final answer
    x = 268.36

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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.