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Finding the Fourth Proportional to 2,245.66, 3,367.38 and 784.60

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Solution

The fourth proportional to 2,245.66, 3,367.38 and 784.60 is: 1,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.66 : 3,367.38 = 784.60 : x
  2. Step 2: Convert to fraction form
    2,245.66/3,367.38 = 784.60/x
  3. Step 3: Cross multiply
    2,245.66x = 3,367.38 × 784.60
  4. Step 4: Simplify right side
    2,245.66x = 2,642,046.35
  5. Step 5: Solve for x
    x = 2,642,046.35/2,245.66
  6. Step 6: Final answer
    x = 1,176.51

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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.