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Finding the Fourth Proportional to 201.28, 300.16 and 199.46

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Solution

The fourth proportional to 201.28, 300.16 and 199.46 is: 297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.28 : 300.16 = 199.46 : x
  2. Step 2: Convert to fraction form
    201.28/300.16 = 199.46/x
  3. Step 3: Cross multiply
    201.28x = 300.16 × 199.46
  4. Step 4: Simplify right side
    201.28x = 59,869.91
  5. Step 5: Solve for x
    x = 59,869.91/201.28
  6. Step 6: Final answer
    x = 297.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.