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Finding the Fourth Proportional to 425.58, 634.94 and 379.41

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Solution

The fourth proportional to 425.58, 634.94 and 379.41 is: 566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.58 : 634.94 = 379.41 : x
  2. Step 2: Convert to fraction form
    425.58/634.94 = 379.41/x
  3. Step 3: Cross multiply
    425.58x = 634.94 × 379.41
  4. Step 4: Simplify right side
    425.58x = 240,900.69
  5. Step 5: Solve for x
    x = 240,900.69/425.58
  6. Step 6: Final answer
    x = 566.05

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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.