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Finding the Fourth Proportional to 788.68, 1,182.89 and 301.62

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Solution

The fourth proportional to 788.68, 1,182.89 and 301.62 is: 452.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.68 : 1,182.89 = 301.62 : x
  2. Step 2: Convert to fraction form
    788.68/1,182.89 = 301.62/x
  3. Step 3: Cross multiply
    788.68x = 1,182.89 × 301.62
  4. Step 4: Simplify right side
    788.68x = 356,783.28
  5. Step 5: Solve for x
    x = 356,783.28/788.68
  6. Step 6: Final answer
    x = 452.38

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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.