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Finding the Fourth Proportional to 204.17, 281.74 and 126.53

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Solution

The fourth proportional to 204.17, 281.74 and 126.53 is: 174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.17 : 281.74 = 126.53 : x
  2. Step 2: Convert to fraction form
    204.17/281.74 = 126.53/x
  3. Step 3: Cross multiply
    204.17x = 281.74 × 126.53
  4. Step 4: Simplify right side
    204.17x = 35,648.56
  5. Step 5: Solve for x
    x = 35,648.56/204.17
  6. Step 6: Final answer
    x = 174.60

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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.