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Finding the Fourth Proportional to 888.97, 1,226.80 and 496.05

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Solution

The fourth proportional to 888.97, 1,226.80 and 496.05 is: 684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.97 : 1,226.80 = 496.05 : x
  2. Step 2: Convert to fraction form
    888.97/1,226.80 = 496.05/x
  3. Step 3: Cross multiply
    888.97x = 1,226.80 × 496.05
  4. Step 4: Simplify right side
    888.97x = 608,554.14
  5. Step 5: Solve for x
    x = 608,554.14/888.97
  6. Step 6: Final answer
    x = 684.56

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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.