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Finding the Fourth Proportional to 798.75, 1,198.08 and 433.44

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Solution

The fourth proportional to 798.75, 1,198.08 and 433.44 is: 650.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.75 : 1,198.08 = 433.44 : x
  2. Step 2: Convert to fraction form
    798.75/1,198.08 = 433.44/x
  3. Step 3: Cross multiply
    798.75x = 1,198.08 × 433.44
  4. Step 4: Simplify right side
    798.75x = 519,295.80
  5. Step 5: Solve for x
    x = 519,295.80/798.75
  6. Step 6: Final answer
    x = 650.14

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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.