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Finding the Fourth Proportional to 450.09, 671.15 and 425.79

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Solution

The fourth proportional to 450.09, 671.15 and 425.79 is: 634.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.09 : 671.15 = 425.79 : x
  2. Step 2: Convert to fraction form
    450.09/671.15 = 425.79/x
  3. Step 3: Cross multiply
    450.09x = 671.15 × 425.79
  4. Step 4: Simplify right side
    450.09x = 285,770.02
  5. Step 5: Solve for x
    x = 285,770.02/450.09
  6. Step 6: Final answer
    x = 634.92

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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.