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Finding the Fourth Proportional to 198.60, 299.35 and 190.36

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Solution

The fourth proportional to 198.60, 299.35 and 190.36 is: 286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.60 : 299.35 = 190.36 : x
  2. Step 2: Convert to fraction form
    198.60/299.35 = 190.36/x
  3. Step 3: Cross multiply
    198.60x = 299.35 × 190.36
  4. Step 4: Simplify right side
    198.60x = 56,984.27
  5. Step 5: Solve for x
    x = 56,984.27/198.60
  6. Step 6: Final answer
    x = 286.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.