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Finding the Fourth Proportional to 172.31, 237.26 and 151.48

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Solution

The fourth proportional to 172.31, 237.26 and 151.48 is: 208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.31 : 237.26 = 151.48 : x
  2. Step 2: Convert to fraction form
    172.31/237.26 = 151.48/x
  3. Step 3: Cross multiply
    172.31x = 237.26 × 151.48
  4. Step 4: Simplify right side
    172.31x = 35,940.14
  5. Step 5: Solve for x
    x = 35,940.14/172.31
  6. Step 6: Final answer
    x = 208.58

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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.