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Finding the Fourth Proportional to 518.76, 773.12 and 501.21

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Solution

The fourth proportional to 518.76, 773.12 and 501.21 is: 746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.76 : 773.12 = 501.21 : x
  2. Step 2: Convert to fraction form
    518.76/773.12 = 501.21/x
  3. Step 3: Cross multiply
    518.76x = 773.12 × 501.21
  4. Step 4: Simplify right side
    518.76x = 387,496.73
  5. Step 5: Solve for x
    x = 387,496.73/518.76
  6. Step 6: Final answer
    x = 746.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.