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Finding the Fourth Proportional to 1,246.29, 1,867.04 and 698.86

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Solution

The fourth proportional to 1,246.29, 1,867.04 and 698.86 is: 1,046.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.29 : 1,867.04 = 698.86 : x
  2. Step 2: Convert to fraction form
    1,246.29/1,867.04 = 698.86/x
  3. Step 3: Cross multiply
    1,246.29x = 1,867.04 × 698.86
  4. Step 4: Simplify right side
    1,246.29x = 1,304,799.57
  5. Step 5: Solve for x
    x = 1,304,799.57/1,246.29
  6. Step 6: Final answer
    x = 1,046.95

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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.