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Finding the Fourth Proportional to 172.65, 235.26 and 168.92

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Solution

The fourth proportional to 172.65, 235.26 and 168.92 is: 230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.65 : 235.26 = 168.92 : x
  2. Step 2: Convert to fraction form
    172.65/235.26 = 168.92/x
  3. Step 3: Cross multiply
    172.65x = 235.26 × 168.92
  4. Step 4: Simplify right side
    172.65x = 39,738.94
  5. Step 5: Solve for x
    x = 39,738.94/172.65
  6. Step 6: Final answer
    x = 230.17

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.