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Finding the Fourth Proportional to 713.28, 984.12 and 480.39

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Solution

The fourth proportional to 713.28, 984.12 and 480.39 is: 662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.28 : 984.12 = 480.39 : x
  2. Step 2: Convert to fraction form
    713.28/984.12 = 480.39/x
  3. Step 3: Cross multiply
    713.28x = 984.12 × 480.39
  4. Step 4: Simplify right side
    713.28x = 472,761.41
  5. Step 5: Solve for x
    x = 472,761.41/713.28
  6. Step 6: Final answer
    x = 662.80

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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.