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Finding the Fourth Proportional to 539.22, 743.36 and 422.58

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Solution

The fourth proportional to 539.22, 743.36 and 422.58 is: 582.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.22 : 743.36 = 422.58 : x
  2. Step 2: Convert to fraction form
    539.22/743.36 = 422.58/x
  3. Step 3: Cross multiply
    539.22x = 743.36 × 422.58
  4. Step 4: Simplify right side
    539.22x = 314,126.96
  5. Step 5: Solve for x
    x = 314,126.96/539.22
  6. Step 6: Final answer
    x = 582.56

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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.