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Finding the Fourth Proportional to 793.08, 1,189.61 and 215.96

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Solution

The fourth proportional to 793.08, 1,189.61 and 215.96 is: 323.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.08 : 1,189.61 = 215.96 : x
  2. Step 2: Convert to fraction form
    793.08/1,189.61 = 215.96/x
  3. Step 3: Cross multiply
    793.08x = 1,189.61 × 215.96
  4. Step 4: Simplify right side
    793.08x = 256,901.15
  5. Step 5: Solve for x
    x = 256,901.15/793.08
  6. Step 6: Final answer
    x = 323.93

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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.