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Finding the Third Proportional to 520.88 and 812.44

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Solution

The third proportional to 520.88 and 812.44 is: 1,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.88 : 812.44 = 812.44 : x
  2. Step 2: Convert to fraction form
    520.88/812.44 = 812.44/x
  3. Step 3: Cross multiply
    520.88x = 812.44 × 812.44
  4. Step 4: Simplify right side
    520.88x = 660,054.69
  5. Step 5: Solve for x
    x = 660,054.69/520.88
  6. Step 6: Final answer
    x = 1,267.20

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.