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Finding the Fourth Proportional to 255.90, 352.93 and 226.42

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Solution

The fourth proportional to 255.90, 352.93 and 226.42 is: 312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.90 : 352.93 = 226.42 : x
  2. Step 2: Convert to fraction form
    255.90/352.93 = 226.42/x
  3. Step 3: Cross multiply
    255.90x = 352.93 × 226.42
  4. Step 4: Simplify right side
    255.90x = 79,910.41
  5. Step 5: Solve for x
    x = 79,910.41/255.90
  6. Step 6: Final answer
    x = 312.27

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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.