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Finding the Fourth Proportional to 667.36, 999.42 and 636.04

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Solution

The fourth proportional to 667.36, 999.42 and 636.04 is: 952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.36 : 999.42 = 636.04 : x
  2. Step 2: Convert to fraction form
    667.36/999.42 = 636.04/x
  3. Step 3: Cross multiply
    667.36x = 999.42 × 636.04
  4. Step 4: Simplify right side
    667.36x = 635,671.10
  5. Step 5: Solve for x
    x = 635,671.10/667.36
  6. Step 6: Final answer
    x = 952.52

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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.