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Finding the Fourth Proportional to 888.73, 1,333.28 and 311.53

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Solution

The fourth proportional to 888.73, 1,333.28 and 311.53 is: 467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.73 : 1,333.28 = 311.53 : x
  2. Step 2: Convert to fraction form
    888.73/1,333.28 = 311.53/x
  3. Step 3: Cross multiply
    888.73x = 1,333.28 × 311.53
  4. Step 4: Simplify right side
    888.73x = 415,355.16
  5. Step 5: Solve for x
    x = 415,355.16/888.73
  6. Step 6: Final answer
    x = 467.36

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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.