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Finding the Third Proportional to 611.16 and 1,078.88

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Solution

The third proportional to 611.16 and 1,078.88 is: 1,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.16 : 1,078.88 = 1,078.88 : x
  2. Step 2: Convert to fraction form
    611.16/1,078.88 = 1,078.88/x
  3. Step 3: Cross multiply
    611.16x = 1,078.88 × 1,078.88
  4. Step 4: Simplify right side
    611.16x = 1,163,971.27
  5. Step 5: Solve for x
    x = 1,163,971.27/611.16
  6. Step 6: Final answer
    x = 1,904.54

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.