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Finding the Fourth Proportional to 488.25, 673.22 and 394.71

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Solution

The fourth proportional to 488.25, 673.22 and 394.71 is: 544.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.25 : 673.22 = 394.71 : x
  2. Step 2: Convert to fraction form
    488.25/673.22 = 394.71/x
  3. Step 3: Cross multiply
    488.25x = 673.22 × 394.71
  4. Step 4: Simplify right side
    488.25x = 265,724.69
  5. Step 5: Solve for x
    x = 265,724.69/488.25
  6. Step 6: Final answer
    x = 544.24

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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.