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Finding the Fourth Proportional to 172.92, 258.24 and 167.04

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Solution

The fourth proportional to 172.92, 258.24 and 167.04 is: 249.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.92 : 258.24 = 167.04 : x
  2. Step 2: Convert to fraction form
    172.92/258.24 = 167.04/x
  3. Step 3: Cross multiply
    172.92x = 258.24 × 167.04
  4. Step 4: Simplify right side
    172.92x = 43,136.41
  5. Step 5: Solve for x
    x = 43,136.41/172.92
  6. Step 6: Final answer
    x = 249.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.