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Finding the Third Proportional to 495 and 775.13

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Solution

The third proportional to 495 and 775.13 is: 1,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    495 : 775.13 = 775.13 : x
  2. Step 2: Convert to fraction form
    495/775.13 = 775.13/x
  3. Step 3: Cross multiply
    495x = 775.13 × 775.13
  4. Step 4: Simplify right side
    495x = 600,818.77
  5. Step 5: Solve for x
    x = 600,818.77/495
  6. Step 6: Final answer
    x = 1,213.78

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.