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Finding the Fourth Proportional to 799.02, 1,102.60 and 449.70

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Solution

The fourth proportional to 799.02, 1,102.60 and 449.70 is: 620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.02 : 1,102.60 = 449.70 : x
  2. Step 2: Convert to fraction form
    799.02/1,102.60 = 449.70/x
  3. Step 3: Cross multiply
    799.02x = 1,102.60 × 449.70
  4. Step 4: Simplify right side
    799.02x = 495,839.22
  5. Step 5: Solve for x
    x = 495,839.22/799.02
  6. Step 6: Final answer
    x = 620.56

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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.