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Finding the Fourth Proportional to 172.68, 236.73 and 168.68

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Solution

The fourth proportional to 172.68, 236.73 and 168.68 is: 231.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.68 : 236.73 = 168.68 : x
  2. Step 2: Convert to fraction form
    172.68/236.73 = 168.68/x
  3. Step 3: Cross multiply
    172.68x = 236.73 × 168.68
  4. Step 4: Simplify right side
    172.68x = 39,931.62
  5. Step 5: Solve for x
    x = 39,931.62/172.68
  6. Step 6: Final answer
    x = 231.25

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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.