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Finding the Fourth Proportional to 605.55, 908.46 and 172.69

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Solution

The fourth proportional to 605.55, 908.46 and 172.69 is: 259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.55 : 908.46 = 172.69 : x
  2. Step 2: Convert to fraction form
    605.55/908.46 = 172.69/x
  3. Step 3: Cross multiply
    605.55x = 908.46 × 172.69
  4. Step 4: Simplify right side
    605.55x = 156,881.96
  5. Step 5: Solve for x
    x = 156,881.96/605.55
  6. Step 6: Final answer
    x = 259.07

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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.