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Finding the Fourth Proportional to 605.59, 908.36 and 172.73

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Solution

The fourth proportional to 605.59, 908.36 and 172.73 is: 259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.59 : 908.36 = 172.73 : x
  2. Step 2: Convert to fraction form
    605.59/908.36 = 172.73/x
  3. Step 3: Cross multiply
    605.59x = 908.36 × 172.73
  4. Step 4: Simplify right side
    605.59x = 156,900.16
  5. Step 5: Solve for x
    x = 156,900.16/605.59
  6. Step 6: Final answer
    x = 259.09

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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.