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Finding the Fourth Proportional to 1,197.38, 1,795.20 and 806.41

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Solution

The fourth proportional to 1,197.38, 1,795.20 and 806.41 is: 1,209.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.38 : 1,795.20 = 806.41 : x
  2. Step 2: Convert to fraction form
    1,197.38/1,795.20 = 806.41/x
  3. Step 3: Cross multiply
    1,197.38x = 1,795.20 × 806.41
  4. Step 4: Simplify right side
    1,197.38x = 1,447,667.23
  5. Step 5: Solve for x
    x = 1,447,667.23/1,197.38
  6. Step 6: Final answer
    x = 1,209.03

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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.