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Finding the Fourth Proportional to 204.85, 282.36 and 131.04

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Solution

The fourth proportional to 204.85, 282.36 and 131.04 is: 180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.85 : 282.36 = 131.04 : x
  2. Step 2: Convert to fraction form
    204.85/282.36 = 131.04/x
  3. Step 3: Cross multiply
    204.85x = 282.36 × 131.04
  4. Step 4: Simplify right side
    204.85x = 37,000.95
  5. Step 5: Solve for x
    x = 37,000.95/204.85
  6. Step 6: Final answer
    x = 180.62

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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.