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Finding the Fourth Proportional to 199.38, 299.40 and 150.64

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Solution

The fourth proportional to 199.38, 299.40 and 150.64 is: 226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.38 : 299.40 = 150.64 : x
  2. Step 2: Convert to fraction form
    199.38/299.40 = 150.64/x
  3. Step 3: Cross multiply
    199.38x = 299.40 × 150.64
  4. Step 4: Simplify right side
    199.38x = 45,101.62
  5. Step 5: Solve for x
    x = 45,101.62/199.38
  6. Step 6: Final answer
    x = 226.21

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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.