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Finding the Fourth Proportional to 576.82, 796.37 and 421.94

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Solution

The fourth proportional to 576.82, 796.37 and 421.94 is: 582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.82 : 796.37 = 421.94 : x
  2. Step 2: Convert to fraction form
    576.82/796.37 = 421.94/x
  3. Step 3: Cross multiply
    576.82x = 796.37 × 421.94
  4. Step 4: Simplify right side
    576.82x = 336,020.36
  5. Step 5: Solve for x
    x = 336,020.36/576.82
  6. Step 6: Final answer
    x = 582.54

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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.