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Finding the Fourth Proportional to 968.30, 1,336.05 and 614.33

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Solution

The fourth proportional to 968.30, 1,336.05 and 614.33 is: 847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.30 : 1,336.05 = 614.33 : x
  2. Step 2: Convert to fraction form
    968.30/1,336.05 = 614.33/x
  3. Step 3: Cross multiply
    968.30x = 1,336.05 × 614.33
  4. Step 4: Simplify right side
    968.30x = 820,768.92
  5. Step 5: Solve for x
    x = 820,768.92/968.30
  6. Step 6: Final answer
    x = 847.64

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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.