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Finding the Third Proportional to 438.75 and 889.88

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Solution

The third proportional to 438.75 and 889.88 is: 1,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.75 : 889.88 = 889.88 : x
  2. Step 2: Convert to fraction form
    438.75/889.88 = 889.88/x
  3. Step 3: Cross multiply
    438.75x = 889.88 × 889.88
  4. Step 4: Simplify right side
    438.75x = 791,877.52
  5. Step 5: Solve for x
    x = 791,877.52/438.75
  6. Step 6: Final answer
    x = 1,804.85

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.