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Finding the Fourth Proportional to 968.08, 1,335.72 and 548.44

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Solution

The fourth proportional to 968.08, 1,335.72 and 548.44 is: 756.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.08 : 1,335.72 = 548.44 : x
  2. Step 2: Convert to fraction form
    968.08/1,335.72 = 548.44/x
  3. Step 3: Cross multiply
    968.08x = 1,335.72 × 548.44
  4. Step 4: Simplify right side
    968.08x = 732,562.28
  5. Step 5: Solve for x
    x = 732,562.28/968.08
  6. Step 6: Final answer
    x = 756.72

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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.