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Finding the Fourth Proportional to 1,198.92, 1,798.12 and 377.00

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Solution

The fourth proportional to 1,198.92, 1,798.12 and 377.00 is: 565.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.92 : 1,798.12 = 377.00 : x
  2. Step 2: Convert to fraction form
    1,198.92/1,798.12 = 377.00/x
  3. Step 3: Cross multiply
    1,198.92x = 1,798.12 × 377.00
  4. Step 4: Simplify right side
    1,198.92x = 677,888.40
  5. Step 5: Solve for x
    x = 677,888.40/1,198.92
  6. Step 6: Final answer
    x = 565.42

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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.