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Finding the Third Proportional to 621.31 and 1,364.13

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Solution

The third proportional to 621.31 and 1,364.13 is: 2,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.31 : 1,364.13 = 1,364.13 : x
  2. Step 2: Convert to fraction form
    621.31/1,364.13 = 1,364.13/x
  3. Step 3: Cross multiply
    621.31x = 1,364.13 × 1,364.13
  4. Step 4: Simplify right side
    621.31x = 1,860,837.02
  5. Step 5: Solve for x
    x = 1,860,837.02/621.31
  6. Step 6: Final answer
    x = 2,995.01

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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.