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Finding the Fourth Proportional to 968.41, 1,336.33 and 674.31

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Solution

The fourth proportional to 968.41, 1,336.33 and 674.31 is: 930.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.41 : 1,336.33 = 674.31 : x
  2. Step 2: Convert to fraction form
    968.41/1,336.33 = 674.31/x
  3. Step 3: Cross multiply
    968.41x = 1,336.33 × 674.31
  4. Step 4: Simplify right side
    968.41x = 901,100.68
  5. Step 5: Solve for x
    x = 901,100.68/968.41
  6. Step 6: Final answer
    x = 930.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.