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Finding the Fourth Proportional to 172.03, 257.74 and 94.97

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Solution

The fourth proportional to 172.03, 257.74 and 94.97 is: 142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.03 : 257.74 = 94.97 : x
  2. Step 2: Convert to fraction form
    172.03/257.74 = 94.97/x
  3. Step 3: Cross multiply
    172.03x = 257.74 × 94.97
  4. Step 4: Simplify right side
    172.03x = 24,477.09
  5. Step 5: Solve for x
    x = 24,477.09/172.03
  6. Step 6: Final answer
    x = 142.29

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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.