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Finding the Fourth Proportional to 517.22, 775.31 and 242.82

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Solution

The fourth proportional to 517.22, 775.31 and 242.82 is: 363.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.22 : 775.31 = 242.82 : x
  2. Step 2: Convert to fraction form
    517.22/775.31 = 242.82/x
  3. Step 3: Cross multiply
    517.22x = 775.31 × 242.82
  4. Step 4: Simplify right side
    517.22x = 188,263.79
  5. Step 5: Solve for x
    x = 188,263.79/517.22
  6. Step 6: Final answer
    x = 363.99

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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.