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Finding the Fourth Proportional to 1,080.11, 1,620.77 and 502.98

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Solution

The fourth proportional to 1,080.11, 1,620.77 and 502.98 is: 754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.11 : 1,620.77 = 502.98 : x
  2. Step 2: Convert to fraction form
    1,080.11/1,620.77 = 502.98/x
  3. Step 3: Cross multiply
    1,080.11x = 1,620.77 × 502.98
  4. Step 4: Simplify right side
    1,080.11x = 815,212.38
  5. Step 5: Solve for x
    x = 815,212.38/1,080.11
  6. Step 6: Final answer
    x = 754.75

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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.