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Finding the Fourth Proportional to 576.20, 795.28 and 355.32

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Solution

The fourth proportional to 576.20, 795.28 and 355.32 is: 490.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.20 : 795.28 = 355.32 : x
  2. Step 2: Convert to fraction form
    576.20/795.28 = 355.32/x
  3. Step 3: Cross multiply
    576.20x = 795.28 × 355.32
  4. Step 4: Simplify right side
    576.20x = 282,578.89
  5. Step 5: Solve for x
    x = 282,578.89/576.20
  6. Step 6: Final answer
    x = 490.42

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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.