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Finding the Fourth Proportional to 1,286.18, 1,927.03 and 799.58

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Solution

The fourth proportional to 1,286.18, 1,927.03 and 799.58 is: 1,197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.18 : 1,927.03 = 799.58 : x
  2. Step 2: Convert to fraction form
    1,286.18/1,927.03 = 799.58/x
  3. Step 3: Cross multiply
    1,286.18x = 1,927.03 × 799.58
  4. Step 4: Simplify right side
    1,286.18x = 1,540,814.65
  5. Step 5: Solve for x
    x = 1,540,814.65/1,286.18
  6. Step 6: Final answer
    x = 1,197.98

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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.