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Finding the Fourth Proportional to 804.41, 1,198.87 and 803.20

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Solution

The fourth proportional to 804.41, 1,198.87 and 803.20 is: 1,197.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.41 : 1,198.87 = 803.20 : x
  2. Step 2: Convert to fraction form
    804.41/1,198.87 = 803.20/x
  3. Step 3: Cross multiply
    804.41x = 1,198.87 × 803.20
  4. Step 4: Simplify right side
    804.41x = 962,932.38
  5. Step 5: Solve for x
    x = 962,932.38/804.41
  6. Step 6: Final answer
    x = 1,197.07

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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.