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Finding the Third Proportional to 404 and 513

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Solution

The third proportional to 404 and 513 is: 651.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    404 : 513 = 513 : x
  2. Step 2: Convert to fraction form
    404/513 = 513/x
  3. Step 3: Cross multiply
    404x = 513 × 513
  4. Step 4: Simplify right side
    404x = 263,169
  5. Step 5: Solve for x
    x = 263,169/404
  6. Step 6: Final answer
    x = 651.41

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.