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Finding the Fourth Proportional to 799.06, 1,099.70 and 676.34

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Solution

The fourth proportional to 799.06, 1,099.70 and 676.34 is: 930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.06 : 1,099.70 = 676.34 : x
  2. Step 2: Convert to fraction form
    799.06/1,099.70 = 676.34/x
  3. Step 3: Cross multiply
    799.06x = 1,099.70 × 676.34
  4. Step 4: Simplify right side
    799.06x = 743,771.10
  5. Step 5: Solve for x
    x = 743,771.10/799.06
  6. Step 6: Final answer
    x = 930.81

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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.