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Finding the Fourth Proportional to 296.75, 409.86 and 234.78

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Solution

The fourth proportional to 296.75, 409.86 and 234.78 is: 324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.75 : 409.86 = 234.78 : x
  2. Step 2: Convert to fraction form
    296.75/409.86 = 234.78/x
  3. Step 3: Cross multiply
    296.75x = 409.86 × 234.78
  4. Step 4: Simplify right side
    296.75x = 96,226.93
  5. Step 5: Solve for x
    x = 96,226.93/296.75
  6. Step 6: Final answer
    x = 324.27

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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.