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Finding the Fourth Proportional to 198.94, 297.28 and 194.38

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Solution

The fourth proportional to 198.94, 297.28 and 194.38 is: 290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.94 : 297.28 = 194.38 : x
  2. Step 2: Convert to fraction form
    198.94/297.28 = 194.38/x
  3. Step 3: Cross multiply
    198.94x = 297.28 × 194.38
  4. Step 4: Simplify right side
    198.94x = 57,785.29
  5. Step 5: Solve for x
    x = 57,785.29/198.94
  6. Step 6: Final answer
    x = 290.47

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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.