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Finding the Fourth Proportional to 799.36, 1,103.12 and 450.05

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Solution

The fourth proportional to 799.36, 1,103.12 and 450.05 is: 621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.36 : 1,103.12 = 450.05 : x
  2. Step 2: Convert to fraction form
    799.36/1,103.12 = 450.05/x
  3. Step 3: Cross multiply
    799.36x = 1,103.12 × 450.05
  4. Step 4: Simplify right side
    799.36x = 496,451.39
  5. Step 5: Solve for x
    x = 496,451.39/799.36
  6. Step 6: Final answer
    x = 621.06

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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.