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Finding the Fourth Proportional to 255.48, 353.89 and 234.96

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Solution

The fourth proportional to 255.48, 353.89 and 234.96 is: 325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.48 : 353.89 = 234.96 : x
  2. Step 2: Convert to fraction form
    255.48/353.89 = 234.96/x
  3. Step 3: Cross multiply
    255.48x = 353.89 × 234.96
  4. Step 4: Simplify right side
    255.48x = 83,149.99
  5. Step 5: Solve for x
    x = 83,149.99/255.48
  6. Step 6: Final answer
    x = 325.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.