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Finding the Fourth Proportional to 626.27, 863.93 and 405.41

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Solution

The fourth proportional to 626.27, 863.93 and 405.41 is: 559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.27 : 863.93 = 405.41 : x
  2. Step 2: Convert to fraction form
    626.27/863.93 = 405.41/x
  3. Step 3: Cross multiply
    626.27x = 863.93 × 405.41
  4. Step 4: Simplify right side
    626.27x = 350,245.86
  5. Step 5: Solve for x
    x = 350,245.86/626.27
  6. Step 6: Final answer
    x = 559.26

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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.