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Finding the Fourth Proportional to 606.67, 908.64 and 424.20

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Solution

The fourth proportional to 606.67, 908.64 and 424.20 is: 635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.67 : 908.64 = 424.20 : x
  2. Step 2: Convert to fraction form
    606.67/908.64 = 424.20/x
  3. Step 3: Cross multiply
    606.67x = 908.64 × 424.20
  4. Step 4: Simplify right side
    606.67x = 385,445.09
  5. Step 5: Solve for x
    x = 385,445.09/606.67
  6. Step 6: Final answer
    x = 635.35

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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.