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Finding the Fourth Proportional to 894.11, 1,339.32 and 663.26

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Solution

The fourth proportional to 894.11, 1,339.32 and 663.26 is: 993.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.11 : 1,339.32 = 663.26 : x
  2. Step 2: Convert to fraction form
    894.11/1,339.32 = 663.26/x
  3. Step 3: Cross multiply
    894.11x = 1,339.32 × 663.26
  4. Step 4: Simplify right side
    894.11x = 888,317.38
  5. Step 5: Solve for x
    x = 888,317.38/894.11
  6. Step 6: Final answer
    x = 993.52

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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.