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Finding the Fourth Proportional to 515.56, 773.54 and 190.96

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Solution

The fourth proportional to 515.56, 773.54 and 190.96 is: 286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.56 : 773.54 = 190.96 : x
  2. Step 2: Convert to fraction form
    515.56/773.54 = 190.96/x
  3. Step 3: Cross multiply
    515.56x = 773.54 × 190.96
  4. Step 4: Simplify right side
    515.56x = 147,715.20
  5. Step 5: Solve for x
    x = 147,715.20/515.56
  6. Step 6: Final answer
    x = 286.51

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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.