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Finding the Fourth Proportional to 202.43, 301.39 and 199.55

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Solution

The fourth proportional to 202.43, 301.39 and 199.55 is: 297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.43 : 301.39 = 199.55 : x
  2. Step 2: Convert to fraction form
    202.43/301.39 = 199.55/x
  3. Step 3: Cross multiply
    202.43x = 301.39 × 199.55
  4. Step 4: Simplify right side
    202.43x = 60,141.38
  5. Step 5: Solve for x
    x = 60,141.38/202.43
  6. Step 6: Final answer
    x = 297.10

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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.