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Finding the Fourth Proportional to 1,099.83, 1,649.48 and 369.39

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Solution

The fourth proportional to 1,099.83, 1,649.48 and 369.39 is: 553.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.83 : 1,649.48 = 369.39 : x
  2. Step 2: Convert to fraction form
    1,099.83/1,649.48 = 369.39/x
  3. Step 3: Cross multiply
    1,099.83x = 1,649.48 × 369.39
  4. Step 4: Simplify right side
    1,099.83x = 609,299.57
  5. Step 5: Solve for x
    x = 609,299.57/1,099.83
  6. Step 6: Final answer
    x = 553.99

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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.