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Finding the Fourth Proportional to 172.39, 238.13 and 150.52

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Solution

The fourth proportional to 172.39, 238.13 and 150.52 is: 207.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.39 : 238.13 = 150.52 : x
  2. Step 2: Convert to fraction form
    172.39/238.13 = 150.52/x
  3. Step 3: Cross multiply
    172.39x = 238.13 × 150.52
  4. Step 4: Simplify right side
    172.39x = 35,843.33
  5. Step 5: Solve for x
    x = 35,843.33/172.39
  6. Step 6: Final answer
    x = 207.92

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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.