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Finding the Fourth Proportional to 668.69, 995.97 and 633.99

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Solution

The fourth proportional to 668.69, 995.97 and 633.99 is: 944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.69 : 995.97 = 633.99 : x
  2. Step 2: Convert to fraction form
    668.69/995.97 = 633.99/x
  3. Step 3: Cross multiply
    668.69x = 995.97 × 633.99
  4. Step 4: Simplify right side
    668.69x = 631,435.02
  5. Step 5: Solve for x
    x = 631,435.02/668.69
  6. Step 6: Final answer
    x = 944.29

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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.