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Finding the Fourth Proportional to 517.09, 775.67 and 228.53

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Solution

The fourth proportional to 517.09, 775.67 and 228.53 is: 342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.09 : 775.67 = 228.53 : x
  2. Step 2: Convert to fraction form
    517.09/775.67 = 228.53/x
  3. Step 3: Cross multiply
    517.09x = 775.67 × 228.53
  4. Step 4: Simplify right side
    517.09x = 177,263.87
  5. Step 5: Solve for x
    x = 177,263.87/517.09
  6. Step 6: Final answer
    x = 342.81

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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.