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Finding the Third Proportional to 555.41 and 1,215.44

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Solution

The third proportional to 555.41 and 1,215.44 is: 2,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.41 : 1,215.44 = 1,215.44 : x
  2. Step 2: Convert to fraction form
    555.41/1,215.44 = 1,215.44/x
  3. Step 3: Cross multiply
    555.41x = 1,215.44 × 1,215.44
  4. Step 4: Simplify right side
    555.41x = 1,477,288.32
  5. Step 5: Solve for x
    x = 1,477,288.32/555.41
  6. Step 6: Final answer
    x = 2,659.83

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.