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Finding the Third Proportional to 554.75 and 788.38

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Solution

The third proportional to 554.75 and 788.38 is: 1,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.75 : 788.38 = 788.38 : x
  2. Step 2: Convert to fraction form
    554.75/788.38 = 788.38/x
  3. Step 3: Cross multiply
    554.75x = 788.38 × 788.38
  4. Step 4: Simplify right side
    554.75x = 621,535.14
  5. Step 5: Solve for x
    x = 621,535.14/554.75
  6. Step 6: Final answer
    x = 1,120.39

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.