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Finding the Fourth Proportional to 888.82, 1,226.58 and 495.87

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Solution

The fourth proportional to 888.82, 1,226.58 and 495.87 is: 684.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.82 : 1,226.58 = 495.87 : x
  2. Step 2: Convert to fraction form
    888.82/1,226.58 = 495.87/x
  3. Step 3: Cross multiply
    888.82x = 1,226.58 × 495.87
  4. Step 4: Simplify right side
    888.82x = 608,224.22
  5. Step 5: Solve for x
    x = 608,224.22/888.82
  6. Step 6: Final answer
    x = 684.31

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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.