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Finding the Fourth Proportional to 204.22, 306.45 and 76.06

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Solution

The fourth proportional to 204.22, 306.45 and 76.06 is: 114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.22 : 306.45 = 76.06 : x
  2. Step 2: Convert to fraction form
    204.22/306.45 = 76.06/x
  3. Step 3: Cross multiply
    204.22x = 306.45 × 76.06
  4. Step 4: Simplify right side
    204.22x = 23,308.59
  5. Step 5: Solve for x
    x = 23,308.59/204.22
  6. Step 6: Final answer
    x = 114.13

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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.