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Finding the Fourth Proportional to 517.93, 777.97 and 323.16

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Solution

The fourth proportional to 517.93, 777.97 and 323.16 is: 485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.93 : 777.97 = 323.16 : x
  2. Step 2: Convert to fraction form
    517.93/777.97 = 323.16/x
  3. Step 3: Cross multiply
    517.93x = 777.97 × 323.16
  4. Step 4: Simplify right side
    517.93x = 251,406.27
  5. Step 5: Solve for x
    x = 251,406.27/517.93
  6. Step 6: Final answer
    x = 485.41

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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.