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Finding the Fourth Proportional to 893.39, 1,232.21 and 613.67

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Solution

The fourth proportional to 893.39, 1,232.21 and 613.67 is: 846.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.39 : 1,232.21 = 613.67 : x
  2. Step 2: Convert to fraction form
    893.39/1,232.21 = 613.67/x
  3. Step 3: Cross multiply
    893.39x = 1,232.21 × 613.67
  4. Step 4: Simplify right side
    893.39x = 756,165.68
  5. Step 5: Solve for x
    x = 756,165.68/893.39
  6. Step 6: Final answer
    x = 846.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.