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Finding the Fourth Proportional to 195.80, 271.55 and 186.80

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Solution

The fourth proportional to 195.80, 271.55 and 186.80 is: 259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.80 : 271.55 = 186.80 : x
  2. Step 2: Convert to fraction form
    195.80/271.55 = 186.80/x
  3. Step 3: Cross multiply
    195.80x = 271.55 × 186.80
  4. Step 4: Simplify right side
    195.80x = 50,725.54
  5. Step 5: Solve for x
    x = 50,725.54/195.80
  6. Step 6: Final answer
    x = 259.07

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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.