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Finding the Fourth Proportional to 202.10, 301.46 and 198.99

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Solution

The fourth proportional to 202.10, 301.46 and 198.99 is: 296.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.10 : 301.46 = 198.99 : x
  2. Step 2: Convert to fraction form
    202.10/301.46 = 198.99/x
  3. Step 3: Cross multiply
    202.10x = 301.46 × 198.99
  4. Step 4: Simplify right side
    202.10x = 59,986.53
  5. Step 5: Solve for x
    x = 59,986.53/202.10
  6. Step 6: Final answer
    x = 296.82

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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.