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Finding the Fourth Proportional to 578.26, 798 and 329.56

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Solution

The fourth proportional to 578.26, 798 and 329.56 is: 454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.26 : 798 = 329.56 : x
  2. Step 2: Convert to fraction form
    578.26/798 = 329.56/x
  3. Step 3: Cross multiply
    578.26x = 798 × 329.56
  4. Step 4: Simplify right side
    578.26x = 262,988.88
  5. Step 5: Solve for x
    x = 262,988.88/578.26
  6. Step 6: Final answer
    x = 454.79

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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.