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Finding the Fourth Proportional to 606.68, 910.28 and 411.90

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Solution

The fourth proportional to 606.68, 910.28 and 411.90 is: 618.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.68 : 910.28 = 411.90 : x
  2. Step 2: Convert to fraction form
    606.68/910.28 = 411.90/x
  3. Step 3: Cross multiply
    606.68x = 910.28 × 411.90
  4. Step 4: Simplify right side
    606.68x = 374,944.33
  5. Step 5: Solve for x
    x = 374,944.33/606.68
  6. Step 6: Final answer
    x = 618.03

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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.