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Finding the Fourth Proportional to 793.64, 1,190.66 and 382.97

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Solution

The fourth proportional to 793.64, 1,190.66 and 382.97 is: 574.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.64 : 1,190.66 = 382.97 : x
  2. Step 2: Convert to fraction form
    793.64/1,190.66 = 382.97/x
  3. Step 3: Cross multiply
    793.64x = 1,190.66 × 382.97
  4. Step 4: Simplify right side
    793.64x = 455,979.19
  5. Step 5: Solve for x
    x = 455,979.19/793.64
  6. Step 6: Final answer
    x = 574.55

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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.