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Finding the Fourth Proportional to 204.36, 304.38 and 199.68

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Solution

The fourth proportional to 204.36, 304.38 and 199.68 is: 297.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.36 : 304.38 = 199.68 : x
  2. Step 2: Convert to fraction form
    204.36/304.38 = 199.68/x
  3. Step 3: Cross multiply
    204.36x = 304.38 × 199.68
  4. Step 4: Simplify right side
    204.36x = 60,778.60
  5. Step 5: Solve for x
    x = 60,778.60/204.36
  6. Step 6: Final answer
    x = 297.41

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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.