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Finding the Fourth Proportional to 296.86, 409.26 and 255.85

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Solution

The fourth proportional to 296.86, 409.26 and 255.85 is: 352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.86 : 409.26 = 255.85 : x
  2. Step 2: Convert to fraction form
    296.86/409.26 = 255.85/x
  3. Step 3: Cross multiply
    296.86x = 409.26 × 255.85
  4. Step 4: Simplify right side
    296.86x = 104,707.89
  5. Step 5: Solve for x
    x = 104,707.89/296.86
  6. Step 6: Final answer
    x = 352.72

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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.