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Finding the Fourth Proportional to 516.71, 774.63 and 323.93

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Solution

The fourth proportional to 516.71, 774.63 and 323.93 is: 485.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.71 : 774.63 = 323.93 : x
  2. Step 2: Convert to fraction form
    516.71/774.63 = 323.93/x
  3. Step 3: Cross multiply
    516.71x = 774.63 × 323.93
  4. Step 4: Simplify right side
    516.71x = 250,925.90
  5. Step 5: Solve for x
    x = 250,925.90/516.71
  6. Step 6: Final answer
    x = 485.62

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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.