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Finding the Fourth Proportional to 186.20, 277.97 and 161.80

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Solution

The fourth proportional to 186.20, 277.97 and 161.80 is: 241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.20 : 277.97 = 161.80 : x
  2. Step 2: Convert to fraction form
    186.20/277.97 = 161.80/x
  3. Step 3: Cross multiply
    186.20x = 277.97 × 161.80
  4. Step 4: Simplify right side
    186.20x = 44,974.04
  5. Step 5: Solve for x
    x = 44,974.04/186.20
  6. Step 6: Final answer
    x = 241.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.