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Finding the Fourth Proportional to 515.97, 774.03 and 169.20

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Solution

The fourth proportional to 515.97, 774.03 and 169.20 is: 253.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.97 : 774.03 = 169.20 : x
  2. Step 2: Convert to fraction form
    515.97/774.03 = 169.20/x
  3. Step 3: Cross multiply
    515.97x = 774.03 × 169.20
  4. Step 4: Simplify right side
    515.97x = 130,965.88
  5. Step 5: Solve for x
    x = 130,965.88/515.97
  6. Step 6: Final answer
    x = 253.82

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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.