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Finding the Fourth Proportional to 1,099.64, 1,649.46 and 330.14

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Solution

The fourth proportional to 1,099.64, 1,649.46 and 330.14 is: 495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.64 : 1,649.46 = 330.14 : x
  2. Step 2: Convert to fraction form
    1,099.64/1,649.46 = 330.14/x
  3. Step 3: Cross multiply
    1,099.64x = 1,649.46 × 330.14
  4. Step 4: Simplify right side
    1,099.64x = 544,552.72
  5. Step 5: Solve for x
    x = 544,552.72/1,099.64
  6. Step 6: Final answer
    x = 495.21

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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.