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Finding the Fourth Proportional to 893.56, 1,336.98 and 620.18

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Solution

The fourth proportional to 893.56, 1,336.98 and 620.18 is: 927.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.56 : 1,336.98 = 620.18 : x
  2. Step 2: Convert to fraction form
    893.56/1,336.98 = 620.18/x
  3. Step 3: Cross multiply
    893.56x = 1,336.98 × 620.18
  4. Step 4: Simplify right side
    893.56x = 829,168.26
  5. Step 5: Solve for x
    x = 829,168.26/893.56
  6. Step 6: Final answer
    x = 927.94

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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.