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Finding the Fourth Proportional to 668.13, 995.13 and 633.43

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Solution

The fourth proportional to 668.13, 995.13 and 633.43 is: 943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.13 : 995.13 = 633.43 : x
  2. Step 2: Convert to fraction form
    668.13/995.13 = 633.43/x
  3. Step 3: Cross multiply
    668.13x = 995.13 × 633.43
  4. Step 4: Simplify right side
    668.13x = 630,345.20
  5. Step 5: Solve for x
    x = 630,345.20/668.13
  6. Step 6: Final answer
    x = 943.45

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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.