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Finding the Fourth Proportional to 884.65, 1,326.62 and 397.57

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Solution

The fourth proportional to 884.65, 1,326.62 and 397.57 is: 596.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.65 : 1,326.62 = 397.57 : x
  2. Step 2: Convert to fraction form
    884.65/1,326.62 = 397.57/x
  3. Step 3: Cross multiply
    884.65x = 1,326.62 × 397.57
  4. Step 4: Simplify right side
    884.65x = 527,422.33
  5. Step 5: Solve for x
    x = 527,422.33/884.65
  6. Step 6: Final answer
    x = 596.19

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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.