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Finding the Fourth Proportional to 716.19, 1,072.68 and 622.44

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Solution

The fourth proportional to 716.19, 1,072.68 and 622.44 is: 932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.19 : 1,072.68 = 622.44 : x
  2. Step 2: Convert to fraction form
    716.19/1,072.68 = 622.44/x
  3. Step 3: Cross multiply
    716.19x = 1,072.68 × 622.44
  4. Step 4: Simplify right side
    716.19x = 667,678.94
  5. Step 5: Solve for x
    x = 667,678.94/716.19
  6. Step 6: Final answer
    x = 932.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.