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Finding the Third Proportional to 890.75 and 1,188.88

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Solution

The third proportional to 890.75 and 1,188.88 is: 1,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.75 : 1,188.88 = 1,188.88 : x
  2. Step 2: Convert to fraction form
    890.75/1,188.88 = 1,188.88/x
  3. Step 3: Cross multiply
    890.75x = 1,188.88 × 1,188.88
  4. Step 4: Simplify right side
    890.75x = 1,413,423.77
  5. Step 5: Solve for x
    x = 1,413,423.77/890.75
  6. Step 6: Final answer
    x = 1,586.78

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.