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Finding the Fourth Proportional to 478.43, 717.41 and 246.97

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Solution

The fourth proportional to 478.43, 717.41 and 246.97 is: 370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.43 : 717.41 = 246.97 : x
  2. Step 2: Convert to fraction form
    478.43/717.41 = 246.97/x
  3. Step 3: Cross multiply
    478.43x = 717.41 × 246.97
  4. Step 4: Simplify right side
    478.43x = 177,177.51
  5. Step 5: Solve for x
    x = 177,177.51/478.43
  6. Step 6: Final answer
    x = 370.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.