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Finding the Fourth Proportional to 980.62, 1,352.86 and 606.94

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Solution

The fourth proportional to 980.62, 1,352.86 and 606.94 is: 837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.62 : 1,352.86 = 606.94 : x
  2. Step 2: Convert to fraction form
    980.62/1,352.86 = 606.94/x
  3. Step 3: Cross multiply
    980.62x = 1,352.86 × 606.94
  4. Step 4: Simplify right side
    980.62x = 821,099.95
  5. Step 5: Solve for x
    x = 821,099.95/980.62
  6. Step 6: Final answer
    x = 837.33

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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.