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Finding the Fourth Proportional to 204.69, 282.40 and 125.99

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Solution

The fourth proportional to 204.69, 282.40 and 125.99 is: 173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.69 : 282.40 = 125.99 : x
  2. Step 2: Convert to fraction form
    204.69/282.40 = 125.99/x
  3. Step 3: Cross multiply
    204.69x = 282.40 × 125.99
  4. Step 4: Simplify right side
    204.69x = 35,578.95
  5. Step 5: Solve for x
    x = 35,578.95/204.69
  6. Step 6: Final answer
    x = 173.82

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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.