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Finding the Third Proportional to 613 and 1,347.50

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Solution

The third proportional to 613 and 1,347.50 is: 2,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    613 : 1,347.50 = 1,347.50 : x
  2. Step 2: Convert to fraction form
    613/1,347.50 = 1,347.50/x
  3. Step 3: Cross multiply
    613x = 1,347.50 × 1,347.50
  4. Step 4: Simplify right side
    613x = 1,815,756.25
  5. Step 5: Solve for x
    x = 1,815,756.25/613
  6. Step 6: Final answer
    x = 2,962.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.