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Finding the Fourth Proportional to 172.67, 236.59 and 172.06

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Solution

The fourth proportional to 172.67, 236.59 and 172.06 is: 235.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.67 : 236.59 = 172.06 : x
  2. Step 2: Convert to fraction form
    172.67/236.59 = 172.06/x
  3. Step 3: Cross multiply
    172.67x = 236.59 × 172.06
  4. Step 4: Simplify right side
    172.67x = 40,706.65
  5. Step 5: Solve for x
    x = 40,706.65/172.67
  6. Step 6: Final answer
    x = 235.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.