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Finding the Fourth Proportional to 884.37, 1,326.25 and 396.55

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Solution

The fourth proportional to 884.37, 1,326.25 and 396.55 is: 594.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.37 : 1,326.25 = 396.55 : x
  2. Step 2: Convert to fraction form
    884.37/1,326.25 = 396.55/x
  3. Step 3: Cross multiply
    884.37x = 1,326.25 × 396.55
  4. Step 4: Simplify right side
    884.37x = 525,918.02
  5. Step 5: Solve for x
    x = 525,918.02/884.37
  6. Step 6: Final answer
    x = 594.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.