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Finding the Third Proportional to 340.25 and 740.50

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Solution

The third proportional to 340.25 and 740.50 is: 1,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.25 : 740.50 = 740.50 : x
  2. Step 2: Convert to fraction form
    340.25/740.50 = 740.50/x
  3. Step 3: Cross multiply
    340.25x = 740.50 × 740.50
  4. Step 4: Simplify right side
    340.25x = 548,340.25
  5. Step 5: Solve for x
    x = 548,340.25/340.25
  6. Step 6: Final answer
    x = 1,611.58

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.