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Finding the Fourth Proportional to 968.44, 1,336.46 and 548.76

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Solution

The fourth proportional to 968.44, 1,336.46 and 548.76 is: 757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.44 : 1,336.46 = 548.76 : x
  2. Step 2: Convert to fraction form
    968.44/1,336.46 = 548.76/x
  3. Step 3: Cross multiply
    968.44x = 1,336.46 × 548.76
  4. Step 4: Simplify right side
    968.44x = 733,395.79
  5. Step 5: Solve for x
    x = 733,395.79/968.44
  6. Step 6: Final answer
    x = 757.30

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1.5x scale

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.