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Finding the Fourth Proportional to 172.97, 259.40 and 63.27

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Solution

The fourth proportional to 172.97, 259.40 and 63.27 is: 94.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.97 : 259.40 = 63.27 : x
  2. Step 2: Convert to fraction form
    172.97/259.40 = 63.27/x
  3. Step 3: Cross multiply
    172.97x = 259.40 × 63.27
  4. Step 4: Simplify right side
    172.97x = 16,412.24
  5. Step 5: Solve for x
    x = 16,412.24/172.97
  6. Step 6: Final answer
    x = 94.88

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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.