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Finding the Fourth Proportional to 1,199.82, 1,800.20 and 469.27

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Solution

The fourth proportional to 1,199.82, 1,800.20 and 469.27 is: 704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.82 : 1,800.20 = 469.27 : x
  2. Step 2: Convert to fraction form
    1,199.82/1,800.20 = 469.27/x
  3. Step 3: Cross multiply
    1,199.82x = 1,800.20 × 469.27
  4. Step 4: Simplify right side
    1,199.82x = 844,779.85
  5. Step 5: Solve for x
    x = 844,779.85/1,199.82
  6. Step 6: Final answer
    x = 704.09

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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.