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Finding the Fourth Proportional to 198.81, 296.26 and 192.94

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Solution

The fourth proportional to 198.81, 296.26 and 192.94 is: 287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.81 : 296.26 = 192.94 : x
  2. Step 2: Convert to fraction form
    198.81/296.26 = 192.94/x
  3. Step 3: Cross multiply
    198.81x = 296.26 × 192.94
  4. Step 4: Simplify right side
    198.81x = 57,159.18
  5. Step 5: Solve for x
    x = 57,159.18/198.81
  6. Step 6: Final answer
    x = 287.51

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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.