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Finding the Third Proportional to 340.88 and 512.16

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Solution

The third proportional to 340.88 and 512.16 is: 769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.88 : 512.16 = 512.16 : x
  2. Step 2: Convert to fraction form
    340.88/512.16 = 512.16/x
  3. Step 3: Cross multiply
    340.88x = 512.16 × 512.16
  4. Step 4: Simplify right side
    340.88x = 262,304.02
  5. Step 5: Solve for x
    x = 262,304.02/340.88
  6. Step 6: Final answer
    x = 769.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.