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Finding the Fourth Proportional to 578.88, 798.84 and 330.26

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Solution

The fourth proportional to 578.88, 798.84 and 330.26 is: 455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.88 : 798.84 = 330.26 : x
  2. Step 2: Convert to fraction form
    578.88/798.84 = 330.26/x
  3. Step 3: Cross multiply
    578.88x = 798.84 × 330.26
  4. Step 4: Simplify right side
    578.88x = 263,820.90
  5. Step 5: Solve for x
    x = 263,820.90/578.88
  6. Step 6: Final answer
    x = 455.74

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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.