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Finding the Third Proportional to 265.13 and 386.81

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Solution

The third proportional to 265.13 and 386.81 is: 564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.13 : 386.81 = 386.81 : x
  2. Step 2: Convert to fraction form
    265.13/386.81 = 386.81/x
  3. Step 3: Cross multiply
    265.13x = 386.81 × 386.81
  4. Step 4: Simplify right side
    265.13x = 149,623.91
  5. Step 5: Solve for x
    x = 149,623.91/265.13
  6. Step 6: Final answer
    x = 564.35

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.