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Finding the Fourth Proportional to 204.31, 304.50 and 197.43

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Solution

The fourth proportional to 204.31, 304.50 and 197.43 is: 294.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.31 : 304.50 = 197.43 : x
  2. Step 2: Convert to fraction form
    204.31/304.50 = 197.43/x
  3. Step 3: Cross multiply
    204.31x = 304.50 × 197.43
  4. Step 4: Simplify right side
    204.31x = 60,117.44
  5. Step 5: Solve for x
    x = 60,117.44/204.31
  6. Step 6: Final answer
    x = 294.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.