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Finding the Fourth Proportional to 626.22, 863.60 and 469.23

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Solution

The fourth proportional to 626.22, 863.60 and 469.23 is: 647.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.22 : 863.60 = 469.23 : x
  2. Step 2: Convert to fraction form
    626.22/863.60 = 469.23/x
  3. Step 3: Cross multiply
    626.22x = 863.60 × 469.23
  4. Step 4: Simplify right side
    626.22x = 405,220.36
  5. Step 5: Solve for x
    x = 405,220.36/626.22
  6. Step 6: Final answer
    x = 647.09

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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.