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Finding the Fourth Proportional to 1,099.99, 1,649.99 and 369.57

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Solution

The fourth proportional to 1,099.99, 1,649.99 and 369.57 is: 554.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.99 : 1,649.99 = 369.57 : x
  2. Step 2: Convert to fraction form
    1,099.99/1,649.99 = 369.57/x
  3. Step 3: Cross multiply
    1,099.99x = 1,649.99 × 369.57
  4. Step 4: Simplify right side
    1,099.99x = 609,784.50
  5. Step 5: Solve for x
    x = 609,784.50/1,099.99
  6. Step 6: Final answer
    x = 554.35

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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.