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Finding the Fourth Proportional to 888.96, 1,226.64 and 495.96

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Solution

The fourth proportional to 888.96, 1,226.64 and 495.96 is: 684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.96 : 1,226.64 = 495.96 : x
  2. Step 2: Convert to fraction form
    888.96/1,226.64 = 495.96/x
  3. Step 3: Cross multiply
    888.96x = 1,226.64 × 495.96
  4. Step 4: Simplify right side
    888.96x = 608,364.37
  5. Step 5: Solve for x
    x = 608,364.37/888.96
  6. Step 6: Final answer
    x = 684.36

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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.