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Finding the Fourth Proportional to 483.44, 727.82 and 425.99

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Solution

The fourth proportional to 483.44, 727.82 and 425.99 is: 641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.44 : 727.82 = 425.99 : x
  2. Step 2: Convert to fraction form
    483.44/727.82 = 425.99/x
  3. Step 3: Cross multiply
    483.44x = 727.82 × 425.99
  4. Step 4: Simplify right side
    483.44x = 310,045.33
  5. Step 5: Solve for x
    x = 310,045.33/483.44
  6. Step 6: Final answer
    x = 641.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.