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Finding the Fourth Proportional to 888.71, 1,226.42 and 495.73

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Solution

The fourth proportional to 888.71, 1,226.42 and 495.73 is: 684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.71 : 1,226.42 = 495.73 : x
  2. Step 2: Convert to fraction form
    888.71/1,226.42 = 495.73/x
  3. Step 3: Cross multiply
    888.71x = 1,226.42 × 495.73
  4. Step 4: Simplify right side
    888.71x = 607,972.12
  5. Step 5: Solve for x
    x = 607,972.12/888.71
  6. Step 6: Final answer
    x = 684.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.