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Finding the Third Proportional to 554.75 and 828.88

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Solution

The third proportional to 554.75 and 828.88 is: 1,238.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.75 : 828.88 = 828.88 : x
  2. Step 2: Convert to fraction form
    554.75/828.88 = 828.88/x
  3. Step 3: Cross multiply
    554.75x = 828.88 × 828.88
  4. Step 4: Simplify right side
    554.75x = 687,033.77
  5. Step 5: Solve for x
    x = 687,033.77/554.75
  6. Step 6: Final answer
    x = 1,238.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.