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Finding the Fourth Proportional to 605.32, 908.02 and 172.48

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Solution

The fourth proportional to 605.32, 908.02 and 172.48 is: 258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.32 : 908.02 = 172.48 : x
  2. Step 2: Convert to fraction form
    605.32/908.02 = 172.48/x
  3. Step 3: Cross multiply
    605.32x = 908.02 × 172.48
  4. Step 4: Simplify right side
    605.32x = 156,615.29
  5. Step 5: Solve for x
    x = 156,615.29/605.32
  6. Step 6: Final answer
    x = 258.73

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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.