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Finding the Fourth Proportional to 205.75, 283.82 and 190.20

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Solution

The fourth proportional to 205.75, 283.82 and 190.20 is: 262.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.75 : 283.82 = 190.20 : x
  2. Step 2: Convert to fraction form
    205.75/283.82 = 190.20/x
  3. Step 3: Cross multiply
    205.75x = 283.82 × 190.20
  4. Step 4: Simplify right side
    205.75x = 53,982.56
  5. Step 5: Solve for x
    x = 53,982.56/205.75
  6. Step 6: Final answer
    x = 262.37

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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.