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Finding the Fourth Proportional to 234.53, 350.43 and 172.56

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Solution

The fourth proportional to 234.53, 350.43 and 172.56 is: 257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.53 : 350.43 = 172.56 : x
  2. Step 2: Convert to fraction form
    234.53/350.43 = 172.56/x
  3. Step 3: Cross multiply
    234.53x = 350.43 × 172.56
  4. Step 4: Simplify right side
    234.53x = 60,470.87
  5. Step 5: Solve for x
    x = 60,470.87/234.53
  6. Step 6: Final answer
    x = 257.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.