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Finding the Fourth Proportional to 205.11, 282.78 and 169.07

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Solution

The fourth proportional to 205.11, 282.78 and 169.07 is: 233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.11 : 282.78 = 169.07 : x
  2. Step 2: Convert to fraction form
    205.11/282.78 = 169.07/x
  3. Step 3: Cross multiply
    205.11x = 282.78 × 169.07
  4. Step 4: Simplify right side
    205.11x = 47,808.20
  5. Step 5: Solve for x
    x = 47,808.20/205.11
  6. Step 6: Final answer
    x = 233.09

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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.