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Finding the Fourth Proportional to 514.46, 771.83 and 270.92

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Solution

The fourth proportional to 514.46, 771.83 and 270.92 is: 406.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.46 : 771.83 = 270.92 : x
  2. Step 2: Convert to fraction form
    514.46/771.83 = 270.92/x
  3. Step 3: Cross multiply
    514.46x = 771.83 × 270.92
  4. Step 4: Simplify right side
    514.46x = 209,104.18
  5. Step 5: Solve for x
    x = 209,104.18/514.46
  6. Step 6: Final answer
    x = 406.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.