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Finding the Fourth Proportional to 172.91, 237.91 and 168.81

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Solution

The fourth proportional to 172.91, 237.91 and 168.81 is: 232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.91 : 237.91 = 168.81 : x
  2. Step 2: Convert to fraction form
    172.91/237.91 = 168.81/x
  3. Step 3: Cross multiply
    172.91x = 237.91 × 168.81
  4. Step 4: Simplify right side
    172.91x = 40,160.40
  5. Step 5: Solve for x
    x = 40,160.40/172.91
  6. Step 6: Final answer
    x = 232.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.