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Finding the Fourth Proportional to 1,080.91, 1,621.02 and 350.31

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Solution

The fourth proportional to 1,080.91, 1,621.02 and 350.31 is: 525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.91 : 1,621.02 = 350.31 : x
  2. Step 2: Convert to fraction form
    1,080.91/1,621.02 = 350.31/x
  3. Step 3: Cross multiply
    1,080.91x = 1,621.02 × 350.31
  4. Step 4: Simplify right side
    1,080.91x = 567,859.52
  5. Step 5: Solve for x
    x = 567,859.52/1,080.91
  6. Step 6: Final answer
    x = 525.35

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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.