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Finding the Fourth Proportional to 268.43, 404.21 and 234.59

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Solution

The fourth proportional to 268.43, 404.21 and 234.59 is: 353.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.43 : 404.21 = 234.59 : x
  2. Step 2: Convert to fraction form
    268.43/404.21 = 234.59/x
  3. Step 3: Cross multiply
    268.43x = 404.21 × 234.59
  4. Step 4: Simplify right side
    268.43x = 94,823.62
  5. Step 5: Solve for x
    x = 94,823.62/268.43
  6. Step 6: Final answer
    x = 353.25

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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.