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Finding the Fourth Proportional to 517.92, 777.16 and 344.66

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Solution

The fourth proportional to 517.92, 777.16 and 344.66 is: 517.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.92 : 777.16 = 344.66 : x
  2. Step 2: Convert to fraction form
    517.92/777.16 = 344.66/x
  3. Step 3: Cross multiply
    517.92x = 777.16 × 344.66
  4. Step 4: Simplify right side
    517.92x = 267,855.97
  5. Step 5: Solve for x
    x = 267,855.97/517.92
  6. Step 6: Final answer
    x = 517.18

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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.