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Finding the Third Proportional to 342.98 and 720.14

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Solution

The third proportional to 342.98 and 720.14 is: 1,512.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.98 : 720.14 = 720.14 : x
  2. Step 2: Convert to fraction form
    342.98/720.14 = 720.14/x
  3. Step 3: Cross multiply
    342.98x = 720.14 × 720.14
  4. Step 4: Simplify right side
    342.98x = 518,602.52
  5. Step 5: Solve for x
    x = 518,602.52/342.98
  6. Step 6: Final answer
    x = 1,512.03

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.