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Finding the Fourth Proportional to 968.36, 1,336.29 and 548.60

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Solution

The fourth proportional to 968.36, 1,336.29 and 548.60 is: 757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.36 : 1,336.29 = 548.60 : x
  2. Step 2: Convert to fraction form
    968.36/1,336.29 = 548.60/x
  3. Step 3: Cross multiply
    968.36x = 1,336.29 × 548.60
  4. Step 4: Simplify right side
    968.36x = 733,088.69
  5. Step 5: Solve for x
    x = 733,088.69/968.36
  6. Step 6: Final answer
    x = 757.04

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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.