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Finding the Fourth Proportional to 204.69, 282.31 and 134.76

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Solution

The fourth proportional to 204.69, 282.31 and 134.76 is: 185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.69 : 282.31 = 134.76 : x
  2. Step 2: Convert to fraction form
    204.69/282.31 = 134.76/x
  3. Step 3: Cross multiply
    204.69x = 282.31 × 134.76
  4. Step 4: Simplify right side
    204.69x = 38,044.10
  5. Step 5: Solve for x
    x = 38,044.10/204.69
  6. Step 6: Final answer
    x = 185.86

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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.