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Finding the Fourth Proportional to 799.16, 1,103.15 and 622.17

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Solution

The fourth proportional to 799.16, 1,103.15 and 622.17 is: 858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.16 : 1,103.15 = 622.17 : x
  2. Step 2: Convert to fraction form
    799.16/1,103.15 = 622.17/x
  3. Step 3: Cross multiply
    799.16x = 1,103.15 × 622.17
  4. Step 4: Simplify right side
    799.16x = 686,348.39
  5. Step 5: Solve for x
    x = 686,348.39/799.16
  6. Step 6: Final answer
    x = 858.84

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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.