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Finding the Fourth Proportional to 243.26, 364.08 and 204.80

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Solution

The fourth proportional to 243.26, 364.08 and 204.80 is: 306.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.26 : 364.08 = 204.80 : x
  2. Step 2: Convert to fraction form
    243.26/364.08 = 204.80/x
  3. Step 3: Cross multiply
    243.26x = 364.08 × 204.80
  4. Step 4: Simplify right side
    243.26x = 74,563.58
  5. Step 5: Solve for x
    x = 74,563.58/243.26
  6. Step 6: Final answer
    x = 306.52

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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.