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Finding the Third Proportional to 516.50 and 829.75

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Solution

The third proportional to 516.50 and 829.75 is: 1,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.50 : 829.75 = 829.75 : x
  2. Step 2: Convert to fraction form
    516.50/829.75 = 829.75/x
  3. Step 3: Cross multiply
    516.50x = 829.75 × 829.75
  4. Step 4: Simplify right side
    516.50x = 688,485.06
  5. Step 5: Solve for x
    x = 688,485.06/516.50
  6. Step 6: Final answer
    x = 1,332.98

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.