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Finding the Third Proportional to 198.62 and 435.69

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Solution

The third proportional to 198.62 and 435.69 is: 955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.62 : 435.69 = 435.69 : x
  2. Step 2: Convert to fraction form
    198.62/435.69 = 435.69/x
  3. Step 3: Cross multiply
    198.62x = 435.69 × 435.69
  4. Step 4: Simplify right side
    198.62x = 189,827.00
  5. Step 5: Solve for x
    x = 189,827.00/198.62
  6. Step 6: Final answer
    x = 955.71

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.