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Finding the Fourth Proportional to 483.48, 721.44 and 425.16

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Solution

The fourth proportional to 483.48, 721.44 and 425.16 is: 634.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.48 : 721.44 = 425.16 : x
  2. Step 2: Convert to fraction form
    483.48/721.44 = 425.16/x
  3. Step 3: Cross multiply
    483.48x = 721.44 × 425.16
  4. Step 4: Simplify right side
    483.48x = 306,727.43
  5. Step 5: Solve for x
    x = 306,727.43/483.48
  6. Step 6: Final answer
    x = 634.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.