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Finding the Fourth Proportional to 199.28, 298.84 and 127.04

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Solution

The fourth proportional to 199.28, 298.84 and 127.04 is: 190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.28 : 298.84 = 127.04 : x
  2. Step 2: Convert to fraction form
    199.28/298.84 = 127.04/x
  3. Step 3: Cross multiply
    199.28x = 298.84 × 127.04
  4. Step 4: Simplify right side
    199.28x = 37,964.63
  5. Step 5: Solve for x
    x = 37,964.63/199.28
  6. Step 6: Final answer
    x = 190.51

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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.