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Finding the Fourth Proportional to 884.18, 1,326.18 and 445.25

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Solution

The fourth proportional to 884.18, 1,326.18 and 445.25 is: 667.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.18 : 1,326.18 = 445.25 : x
  2. Step 2: Convert to fraction form
    884.18/1,326.18 = 445.25/x
  3. Step 3: Cross multiply
    884.18x = 1,326.18 × 445.25
  4. Step 4: Simplify right side
    884.18x = 590,484.96
  5. Step 5: Solve for x
    x = 590,484.96/884.18
  6. Step 6: Final answer
    x = 667.84

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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.