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Finding the Fourth Proportional to 788.84, 1,183.22 and 301.86

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Solution

The fourth proportional to 788.84, 1,183.22 and 301.86 is: 452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.84 : 1,183.22 = 301.86 : x
  2. Step 2: Convert to fraction form
    788.84/1,183.22 = 301.86/x
  3. Step 3: Cross multiply
    788.84x = 1,183.22 × 301.86
  4. Step 4: Simplify right side
    788.84x = 357,168.11
  5. Step 5: Solve for x
    x = 357,168.11/788.84
  6. Step 6: Final answer
    x = 452.78

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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.