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Finding the Fourth Proportional to 822.22, 1,133.95 and 674.59

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Solution

The fourth proportional to 822.22, 1,133.95 and 674.59 is: 930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.22 : 1,133.95 = 674.59 : x
  2. Step 2: Convert to fraction form
    822.22/1,133.95 = 674.59/x
  3. Step 3: Cross multiply
    822.22x = 1,133.95 × 674.59
  4. Step 4: Simplify right side
    822.22x = 764,951.33
  5. Step 5: Solve for x
    x = 764,951.33/822.22
  6. Step 6: Final answer
    x = 930.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.