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Finding the Fourth Proportional to 260.48, 388.90 and 234.56

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Solution

The fourth proportional to 260.48, 388.90 and 234.56 is: 350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.48 : 388.90 = 234.56 : x
  2. Step 2: Convert to fraction form
    260.48/388.90 = 234.56/x
  3. Step 3: Cross multiply
    260.48x = 388.90 × 234.56
  4. Step 4: Simplify right side
    260.48x = 91,218.29
  5. Step 5: Solve for x
    x = 91,218.29/260.48
  6. Step 6: Final answer
    x = 350.20

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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.