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Finding the Fourth Proportional to 788.71, 1,183.13 and 301.49

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Solution

The fourth proportional to 788.71, 1,183.13 and 301.49 is: 452.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.71 : 1,183.13 = 301.49 : x
  2. Step 2: Convert to fraction form
    788.71/1,183.13 = 301.49/x
  3. Step 3: Cross multiply
    788.71x = 1,183.13 × 301.49
  4. Step 4: Simplify right side
    788.71x = 356,700.36
  5. Step 5: Solve for x
    x = 356,700.36/788.71
  6. Step 6: Final answer
    x = 452.26

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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.