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Finding the Fourth Proportional to 1,198.78, 1,797.71 and 468.19

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Solution

The fourth proportional to 1,198.78, 1,797.71 and 468.19 is: 702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.78 : 1,797.71 = 468.19 : x
  2. Step 2: Convert to fraction form
    1,198.78/1,797.71 = 468.19/x
  3. Step 3: Cross multiply
    1,198.78x = 1,797.71 × 468.19
  4. Step 4: Simplify right side
    1,198.78x = 841,658.52
  5. Step 5: Solve for x
    x = 841,658.52/1,198.78
  6. Step 6: Final answer
    x = 702.10

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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.