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Finding the Fourth Proportional to 626.39, 938.54 and 517.04

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Solution

The fourth proportional to 626.39, 938.54 and 517.04 is: 774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.39 : 938.54 = 517.04 : x
  2. Step 2: Convert to fraction form
    626.39/938.54 = 517.04/x
  3. Step 3: Cross multiply
    626.39x = 938.54 × 517.04
  4. Step 4: Simplify right side
    626.39x = 485,266.36
  5. Step 5: Solve for x
    x = 485,266.36/626.39
  6. Step 6: Final answer
    x = 774.70

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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.