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Finding the Fourth Proportional to 793.57, 1,190.56 and 306.46

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Solution

The fourth proportional to 793.57, 1,190.56 and 306.46 is: 459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.57 : 1,190.56 = 306.46 : x
  2. Step 2: Convert to fraction form
    793.57/1,190.56 = 306.46/x
  3. Step 3: Cross multiply
    793.57x = 1,190.56 × 306.46
  4. Step 4: Simplify right side
    793.57x = 364,859.02
  5. Step 5: Solve for x
    x = 364,859.02/793.57
  6. Step 6: Final answer
    x = 459.77

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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.