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Finding the Fourth Proportional to 1,080.60, 1,620.90 and 350.19

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Solution

The fourth proportional to 1,080.60, 1,620.90 and 350.19 is: 525.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.60 : 1,620.90 = 350.19 : x
  2. Step 2: Convert to fraction form
    1,080.60/1,620.90 = 350.19/x
  3. Step 3: Cross multiply
    1,080.60x = 1,620.90 × 350.19
  4. Step 4: Simplify right side
    1,080.60x = 567,622.97
  5. Step 5: Solve for x
    x = 567,622.97/1,080.60
  6. Step 6: Final answer
    x = 525.29

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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.