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Finding the Fourth Proportional to 515.59, 773.52 and 168.98

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Solution

The fourth proportional to 515.59, 773.52 and 168.98 is: 253.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.59 : 773.52 = 168.98 : x
  2. Step 2: Convert to fraction form
    515.59/773.52 = 168.98/x
  3. Step 3: Cross multiply
    515.59x = 773.52 × 168.98
  4. Step 4: Simplify right side
    515.59x = 130,704.91
  5. Step 5: Solve for x
    x = 130,704.91/515.59
  6. Step 6: Final answer
    x = 253.51

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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.