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Finding the Fourth Proportional to 517.24, 775.98 and 228.76

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Solution

The fourth proportional to 517.24, 775.98 and 228.76 is: 343.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.24 : 775.98 = 228.76 : x
  2. Step 2: Convert to fraction form
    517.24/775.98 = 228.76/x
  3. Step 3: Cross multiply
    517.24x = 775.98 × 228.76
  4. Step 4: Simplify right side
    517.24x = 177,513.18
  5. Step 5: Solve for x
    x = 177,513.18/517.24
  6. Step 6: Final answer
    x = 343.19

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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.