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Finding the Fourth Proportional to 204.92, 306.81 and 166.31

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Solution

The fourth proportional to 204.92, 306.81 and 166.31 is: 249.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.92 : 306.81 = 166.31 : x
  2. Step 2: Convert to fraction form
    204.92/306.81 = 166.31/x
  3. Step 3: Cross multiply
    204.92x = 306.81 × 166.31
  4. Step 4: Simplify right side
    204.92x = 51,024.04
  5. Step 5: Solve for x
    x = 51,024.04/204.92
  6. Step 6: Final answer
    x = 249.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.