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Finding the Fourth Proportional to 515.24, 773.35 and 284.39

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Solution

The fourth proportional to 515.24, 773.35 and 284.39 is: 426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.24 : 773.35 = 284.39 : x
  2. Step 2: Convert to fraction form
    515.24/773.35 = 284.39/x
  3. Step 3: Cross multiply
    515.24x = 773.35 × 284.39
  4. Step 4: Simplify right side
    515.24x = 219,929.15
  5. Step 5: Solve for x
    x = 219,929.15/515.24
  6. Step 6: Final answer
    x = 426.85

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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.