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Finding the Third Proportional to 256.31 and 512.06

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Solution

The third proportional to 256.31 and 512.06 is: 1,023.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.31 : 512.06 = 512.06 : x
  2. Step 2: Convert to fraction form
    256.31/512.06 = 512.06/x
  3. Step 3: Cross multiply
    256.31x = 512.06 × 512.06
  4. Step 4: Simplify right side
    256.31x = 262,208.00
  5. Step 5: Solve for x
    x = 262,208.00/256.31
  6. Step 6: Final answer
    x = 1,023.00

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Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.