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Finding the Fourth Proportional to 199.09, 298.73 and 130.65

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Solution

The fourth proportional to 199.09, 298.73 and 130.65 is: 196.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.09 : 298.73 = 130.65 : x
  2. Step 2: Convert to fraction form
    199.09/298.73 = 130.65/x
  3. Step 3: Cross multiply
    199.09x = 298.73 × 130.65
  4. Step 4: Simplify right side
    199.09x = 39,029.07
  5. Step 5: Solve for x
    x = 39,029.07/199.09
  6. Step 6: Final answer
    x = 196.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.