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Finding the Fourth Proportional to 204.42, 282.27 and 171.21

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Solution

The fourth proportional to 204.42, 282.27 and 171.21 is: 236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.42 : 282.27 = 171.21 : x
  2. Step 2: Convert to fraction form
    204.42/282.27 = 171.21/x
  3. Step 3: Cross multiply
    204.42x = 282.27 × 171.21
  4. Step 4: Simplify right side
    204.42x = 48,325.18
  5. Step 5: Solve for x
    x = 48,325.18/204.42
  6. Step 6: Final answer
    x = 236.41

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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.