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Finding the Fourth Proportional to 516.73, 713.10 and 317.67

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Solution

The fourth proportional to 516.73, 713.10 and 317.67 is: 438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.73 : 713.10 = 317.67 : x
  2. Step 2: Convert to fraction form
    516.73/713.10 = 317.67/x
  3. Step 3: Cross multiply
    516.73x = 713.10 × 317.67
  4. Step 4: Simplify right side
    516.73x = 226,525.65
  5. Step 5: Solve for x
    x = 226,525.65/516.73
  6. Step 6: Final answer
    x = 438.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.