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Finding the Fourth Proportional to 606.22, 908.52 and 400.21

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Solution

The fourth proportional to 606.22, 908.52 and 400.21 is: 599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.22 : 908.52 = 400.21 : x
  2. Step 2: Convert to fraction form
    606.22/908.52 = 400.21/x
  3. Step 3: Cross multiply
    606.22x = 908.52 × 400.21
  4. Step 4: Simplify right side
    606.22x = 363,598.79
  5. Step 5: Solve for x
    x = 363,598.79/606.22
  6. Step 6: Final answer
    x = 599.78

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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.