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Finding the Fourth Proportional to 1,086.03, 1,629.03 and 264.28

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Solution

The fourth proportional to 1,086.03, 1,629.03 and 264.28 is: 396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.03 : 1,629.03 = 264.28 : x
  2. Step 2: Convert to fraction form
    1,086.03/1,629.03 = 264.28/x
  3. Step 3: Cross multiply
    1,086.03x = 1,629.03 × 264.28
  4. Step 4: Simplify right side
    1,086.03x = 430,520.05
  5. Step 5: Solve for x
    x = 430,520.05/1,086.03
  6. Step 6: Final answer
    x = 396.42

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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.