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Finding the Fourth Proportional to 1,198.38, 1,799.98 and 833.88

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Solution

The fourth proportional to 1,198.38, 1,799.98 and 833.88 is: 1,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.38 : 1,799.98 = 833.88 : x
  2. Step 2: Convert to fraction form
    1,198.38/1,799.98 = 833.88/x
  3. Step 3: Cross multiply
    1,198.38x = 1,799.98 × 833.88
  4. Step 4: Simplify right side
    1,198.38x = 1,500,967.32
  5. Step 5: Solve for x
    x = 1,500,967.32/1,198.38
  6. Step 6: Final answer
    x = 1,252.50

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1.5x scale

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.