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Finding the Fourth Proportional to 888.89, 1,333.32 and 272.60

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Solution

The fourth proportional to 888.89, 1,333.32 and 272.60 is: 408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.89 : 1,333.32 = 272.60 : x
  2. Step 2: Convert to fraction form
    888.89/1,333.32 = 272.60/x
  3. Step 3: Cross multiply
    888.89x = 1,333.32 × 272.60
  4. Step 4: Simplify right side
    888.89x = 363,456.37
  5. Step 5: Solve for x
    x = 363,456.37/888.89
  6. Step 6: Final answer
    x = 408.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.