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Finding the Fourth Proportional to 664.11, 996.12 and 626.04

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Solution

The fourth proportional to 664.11, 996.12 and 626.04 is: 939.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.11 : 996.12 = 626.04 : x
  2. Step 2: Convert to fraction form
    664.11/996.12 = 626.04/x
  3. Step 3: Cross multiply
    664.11x = 996.12 × 626.04
  4. Step 4: Simplify right side
    664.11x = 623,610.96
  5. Step 5: Solve for x
    x = 623,610.96/664.11
  6. Step 6: Final answer
    x = 939.02

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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.