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Finding the Third Proportional to 105 and 265.13

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Solution

The third proportional to 105 and 265.13 is: 669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105 : 265.13 = 265.13 : x
  2. Step 2: Convert to fraction form
    105/265.13 = 265.13/x
  3. Step 3: Cross multiply
    105x = 265.13 × 265.13
  4. Step 4: Simplify right side
    105x = 70,291.27
  5. Step 5: Solve for x
    x = 70,291.27/105
  6. Step 6: Final answer
    x = 669.44

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Why These Related Problems?

These problems maintain the same ratio (2.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.