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Finding the Fourth Proportional to 515.92, 773.94 and 242.10

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Solution

The fourth proportional to 515.92, 773.94 and 242.10 is: 363.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.92 : 773.94 = 242.10 : x
  2. Step 2: Convert to fraction form
    515.92/773.94 = 242.10/x
  3. Step 3: Cross multiply
    515.92x = 773.94 × 242.10
  4. Step 4: Simplify right side
    515.92x = 187,370.87
  5. Step 5: Solve for x
    x = 187,370.87/515.92
  6. Step 6: Final answer
    x = 363.18

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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.