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Finding the Fourth Proportional to 1,080.77, 1,621.33 and 350.20

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Solution

The fourth proportional to 1,080.77, 1,621.33 and 350.20 is: 525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.77 : 1,621.33 = 350.20 : x
  2. Step 2: Convert to fraction form
    1,080.77/1,621.33 = 350.20/x
  3. Step 3: Cross multiply
    1,080.77x = 1,621.33 × 350.20
  4. Step 4: Simplify right side
    1,080.77x = 567,788.02
  5. Step 5: Solve for x
    x = 567,788.02/1,080.77
  6. Step 6: Final answer
    x = 525.36

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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.