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Finding the Fourth Proportional to 796.41, 1,187.98 and 667.24

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Solution

The fourth proportional to 796.41, 1,187.98 and 667.24 is: 995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.41 : 1,187.98 = 667.24 : x
  2. Step 2: Convert to fraction form
    796.41/1,187.98 = 667.24/x
  3. Step 3: Cross multiply
    796.41x = 1,187.98 × 667.24
  4. Step 4: Simplify right side
    796.41x = 792,663.14
  5. Step 5: Solve for x
    x = 792,663.14/796.41
  6. Step 6: Final answer
    x = 995.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.