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Finding the Fourth Proportional to 314.09, 433.17 and 255.77

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Solution

The fourth proportional to 314.09, 433.17 and 255.77 is: 352.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.09 : 433.17 = 255.77 : x
  2. Step 2: Convert to fraction form
    314.09/433.17 = 255.77/x
  3. Step 3: Cross multiply
    314.09x = 433.17 × 255.77
  4. Step 4: Simplify right side
    314.09x = 110,789.73
  5. Step 5: Solve for x
    x = 110,789.73/314.09
  6. Step 6: Final answer
    x = 352.74

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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.