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Finding the Fourth Proportional to 888.94, 1,226.60 and 495.90

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Solution

The fourth proportional to 888.94, 1,226.60 and 495.90 is: 684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.94 : 1,226.60 = 495.90 : x
  2. Step 2: Convert to fraction form
    888.94/1,226.60 = 495.90/x
  3. Step 3: Cross multiply
    888.94x = 1,226.60 × 495.90
  4. Step 4: Simplify right side
    888.94x = 608,270.94
  5. Step 5: Solve for x
    x = 608,270.94/888.94
  6. Step 6: Final answer
    x = 684.27

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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.