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Finding the Fourth Proportional to 1,080.97, 1,621.08 and 350.39

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Solution

The fourth proportional to 1,080.97, 1,621.08 and 350.39 is: 525.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.97 : 1,621.08 = 350.39 : x
  2. Step 2: Convert to fraction form
    1,080.97/1,621.08 = 350.39/x
  3. Step 3: Cross multiply
    1,080.97x = 1,621.08 × 350.39
  4. Step 4: Simplify right side
    1,080.97x = 568,014.27
  5. Step 5: Solve for x
    x = 568,014.27/1,080.97
  6. Step 6: Final answer
    x = 525.47

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1.5x scale

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.