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Finding the Fourth Proportional to 202.42, 277.09 and 195.86

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Solution

The fourth proportional to 202.42, 277.09 and 195.86 is: 268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.42 : 277.09 = 195.86 : x
  2. Step 2: Convert to fraction form
    202.42/277.09 = 195.86/x
  3. Step 3: Cross multiply
    202.42x = 277.09 × 195.86
  4. Step 4: Simplify right side
    202.42x = 54,269.87
  5. Step 5: Solve for x
    x = 54,269.87/202.42
  6. Step 6: Final answer
    x = 268.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.