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Finding the Fourth Proportional to 531.54, 796.55 and 518.76

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Solution

The fourth proportional to 531.54, 796.55 and 518.76 is: 777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.54 : 796.55 = 518.76 : x
  2. Step 2: Convert to fraction form
    531.54/796.55 = 518.76/x
  3. Step 3: Cross multiply
    531.54x = 796.55 × 518.76
  4. Step 4: Simplify right side
    531.54x = 413,215.68
  5. Step 5: Solve for x
    x = 413,215.68/531.54
  6. Step 6: Final answer
    x = 777.39

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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.