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Finding the Fourth Proportional to 606.39, 910.06 and 422.59

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Solution

The fourth proportional to 606.39, 910.06 and 422.59 is: 634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.39 : 910.06 = 422.59 : x
  2. Step 2: Convert to fraction form
    606.39/910.06 = 422.59/x
  3. Step 3: Cross multiply
    606.39x = 910.06 × 422.59
  4. Step 4: Simplify right side
    606.39x = 384,578.92
  5. Step 5: Solve for x
    x = 384,578.92/606.39
  6. Step 6: Final answer
    x = 634.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.