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Finding the Fourth Proportional to 457.26, 682.58 and 425.22

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Solution

The fourth proportional to 457.26, 682.58 and 425.22 is: 634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.26 : 682.58 = 425.22 : x
  2. Step 2: Convert to fraction form
    457.26/682.58 = 425.22/x
  3. Step 3: Cross multiply
    457.26x = 682.58 × 425.22
  4. Step 4: Simplify right side
    457.26x = 290,241.98
  5. Step 5: Solve for x
    x = 290,241.98/457.26
  6. Step 6: Final answer
    x = 634.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.