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Finding the Fourth Proportional to 199.44, 300.94 and 191.94

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Solution

The fourth proportional to 199.44, 300.94 and 191.94 is: 289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.44 : 300.94 = 191.94 : x
  2. Step 2: Convert to fraction form
    199.44/300.94 = 191.94/x
  3. Step 3: Cross multiply
    199.44x = 300.94 × 191.94
  4. Step 4: Simplify right side
    199.44x = 57,762.42
  5. Step 5: Solve for x
    x = 57,762.42/199.44
  6. Step 6: Final answer
    x = 289.62

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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.