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Finding the Fourth Proportional to 232.70, 350.40 and 172.25

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Solution

The fourth proportional to 232.70, 350.40 and 172.25 is: 259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.70 : 350.40 = 172.25 : x
  2. Step 2: Convert to fraction form
    232.70/350.40 = 172.25/x
  3. Step 3: Cross multiply
    232.70x = 350.40 × 172.25
  4. Step 4: Simplify right side
    232.70x = 60,357.28
  5. Step 5: Solve for x
    x = 60,357.28/232.70
  6. Step 6: Final answer
    x = 259.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.