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Finding the Fourth Proportional to 267.80, 369.75 and 197.86

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Solution

The fourth proportional to 267.80, 369.75 and 197.86 is: 273.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.80 : 369.75 = 197.86 : x
  2. Step 2: Convert to fraction form
    267.80/369.75 = 197.86/x
  3. Step 3: Cross multiply
    267.80x = 369.75 × 197.86
  4. Step 4: Simplify right side
    267.80x = 73,157.75
  5. Step 5: Solve for x
    x = 73,157.75/267.80
  6. Step 6: Final answer
    x = 273.18

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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.