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Finding the Fourth Proportional to 668.31, 995.25 and 651.30

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Solution

The fourth proportional to 668.31, 995.25 and 651.30 is: 969.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.31 : 995.25 = 651.30 : x
  2. Step 2: Convert to fraction form
    668.31/995.25 = 651.30/x
  3. Step 3: Cross multiply
    668.31x = 995.25 × 651.30
  4. Step 4: Simplify right side
    668.31x = 648,206.33
  5. Step 5: Solve for x
    x = 648,206.33/668.31
  6. Step 6: Final answer
    x = 969.92

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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.