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Finding the Fourth Proportional to 201.14, 278.84 and 194.42

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Solution

The fourth proportional to 201.14, 278.84 and 194.42 is: 269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.14 : 278.84 = 194.42 : x
  2. Step 2: Convert to fraction form
    201.14/278.84 = 194.42/x
  3. Step 3: Cross multiply
    201.14x = 278.84 × 194.42
  4. Step 4: Simplify right side
    201.14x = 54,212.07
  5. Step 5: Solve for x
    x = 54,212.07/201.14
  6. Step 6: Final answer
    x = 269.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.