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Finding the Fourth Proportional to 255.81, 353.26 and 168.53

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Solution

The fourth proportional to 255.81, 353.26 and 168.53 is: 232.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.81 : 353.26 = 168.53 : x
  2. Step 2: Convert to fraction form
    255.81/353.26 = 168.53/x
  3. Step 3: Cross multiply
    255.81x = 353.26 × 168.53
  4. Step 4: Simplify right side
    255.81x = 59,534.91
  5. Step 5: Solve for x
    x = 59,534.91/255.81
  6. Step 6: Final answer
    x = 232.73

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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.