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Finding the Third Proportional to 890.44 and 1,328.34

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Solution

The third proportional to 890.44 and 1,328.34 is: 1,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.44 : 1,328.34 = 1,328.34 : x
  2. Step 2: Convert to fraction form
    890.44/1,328.34 = 1,328.34/x
  3. Step 3: Cross multiply
    890.44x = 1,328.34 × 1,328.34
  4. Step 4: Simplify right side
    890.44x = 1,764,497.12
  5. Step 5: Solve for x
    x = 1,764,497.12/890.44
  6. Step 6: Final answer
    x = 1,981.61

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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.