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Finding the Fourth Proportional to 818.02, 1,222.03 and 673.84

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Solution

The fourth proportional to 818.02, 1,222.03 and 673.84 is: 1,006.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.02 : 1,222.03 = 673.84 : x
  2. Step 2: Convert to fraction form
    818.02/1,222.03 = 673.84/x
  3. Step 3: Cross multiply
    818.02x = 1,222.03 × 673.84
  4. Step 4: Simplify right side
    818.02x = 823,452.70
  5. Step 5: Solve for x
    x = 823,452.70/818.02
  6. Step 6: Final answer
    x = 1,006.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.