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Finding the Fourth Proportional to 255.85, 353.10 and 150.94

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Solution

The fourth proportional to 255.85, 353.10 and 150.94 is: 208.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.85 : 353.10 = 150.94 : x
  2. Step 2: Convert to fraction form
    255.85/353.10 = 150.94/x
  3. Step 3: Cross multiply
    255.85x = 353.10 × 150.94
  4. Step 4: Simplify right side
    255.85x = 53,296.91
  5. Step 5: Solve for x
    x = 53,296.91/255.85
  6. Step 6: Final answer
    x = 208.31

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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.