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Finding the Fourth Proportional to 888.88, 1,326.53 and 791.68

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Solution

The fourth proportional to 888.88, 1,326.53 and 791.68 is: 1,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.88 : 1,326.53 = 791.68 : x
  2. Step 2: Convert to fraction form
    888.88/1,326.53 = 791.68/x
  3. Step 3: Cross multiply
    888.88x = 1,326.53 × 791.68
  4. Step 4: Simplify right side
    888.88x = 1,050,187.27
  5. Step 5: Solve for x
    x = 1,050,187.27/888.88
  6. Step 6: Final answer
    x = 1,181.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.