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Finding the Fourth Proportional to 172.53, 258.49 and 162.25

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Solution

The fourth proportional to 172.53, 258.49 and 162.25 is: 243.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.53 : 258.49 = 162.25 : x
  2. Step 2: Convert to fraction form
    172.53/258.49 = 162.25/x
  3. Step 3: Cross multiply
    172.53x = 258.49 × 162.25
  4. Step 4: Simplify right side
    172.53x = 41,939.13
  5. Step 5: Solve for x
    x = 41,939.13/172.53
  6. Step 6: Final answer
    x = 243.09

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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.