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Finding the Fourth Proportional to 993.33, 1,488.11 and 798.75

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Solution

The fourth proportional to 993.33, 1,488.11 and 798.75 is: 1,196.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.33 : 1,488.11 = 798.75 : x
  2. Step 2: Convert to fraction form
    993.33/1,488.11 = 798.75/x
  3. Step 3: Cross multiply
    993.33x = 1,488.11 × 798.75
  4. Step 4: Simplify right side
    993.33x = 1,188,623.87
  5. Step 5: Solve for x
    x = 1,188,623.87/993.33
  6. Step 6: Final answer
    x = 1,196.61

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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.