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Finding the Fourth Proportional to 1,080.90, 1,620.27 and 533.48

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Solution

The fourth proportional to 1,080.90, 1,620.27 and 533.48 is: 799.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.90 : 1,620.27 = 533.48 : x
  2. Step 2: Convert to fraction form
    1,080.90/1,620.27 = 533.48/x
  3. Step 3: Cross multiply
    1,080.90x = 1,620.27 × 533.48
  4. Step 4: Simplify right side
    1,080.90x = 864,373.54
  5. Step 5: Solve for x
    x = 864,373.54/1,080.90
  6. Step 6: Final answer
    x = 799.68

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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.