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Finding the Fourth Proportional to 255.56, 350.34 and 251.76

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Solution

The fourth proportional to 255.56, 350.34 and 251.76 is: 345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.56 : 350.34 = 251.76 : x
  2. Step 2: Convert to fraction form
    255.56/350.34 = 251.76/x
  3. Step 3: Cross multiply
    255.56x = 350.34 × 251.76
  4. Step 4: Simplify right side
    255.56x = 88,201.60
  5. Step 5: Solve for x
    x = 88,201.60/255.56
  6. Step 6: Final answer
    x = 345.13

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.