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Finding the Fourth Proportional to 204.50, 282.23 and 126.89

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Solution

The fourth proportional to 204.50, 282.23 and 126.89 is: 175.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.50 : 282.23 = 126.89 : x
  2. Step 2: Convert to fraction form
    204.50/282.23 = 126.89/x
  3. Step 3: Cross multiply
    204.50x = 282.23 × 126.89
  4. Step 4: Simplify right side
    204.50x = 35,812.16
  5. Step 5: Solve for x
    x = 35,812.16/204.50
  6. Step 6: Final answer
    x = 175.12

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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.