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Finding the Fourth Proportional to 894.11, 1,339.64 and 633.68

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Solution

The fourth proportional to 894.11, 1,339.64 and 633.68 is: 949.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.11 : 1,339.64 = 633.68 : x
  2. Step 2: Convert to fraction form
    894.11/1,339.64 = 633.68/x
  3. Step 3: Cross multiply
    894.11x = 1,339.64 × 633.68
  4. Step 4: Simplify right side
    894.11x = 848,903.08
  5. Step 5: Solve for x
    x = 848,903.08/894.11
  6. Step 6: Final answer
    x = 949.44

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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.