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Finding the Fourth Proportional to 888.43, 1,226.01 and 495.49

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Solution

The fourth proportional to 888.43, 1,226.01 and 495.49 is: 683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.43 : 1,226.01 = 495.49 : x
  2. Step 2: Convert to fraction form
    888.43/1,226.01 = 495.49/x
  3. Step 3: Cross multiply
    888.43x = 1,226.01 × 495.49
  4. Step 4: Simplify right side
    888.43x = 607,475.69
  5. Step 5: Solve for x
    x = 607,475.69/888.43
  6. Step 6: Final answer
    x = 683.76

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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.