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Finding the Fourth Proportional to 1,449.66, 2,174.46 and 354.03

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Solution

The fourth proportional to 1,449.66, 2,174.46 and 354.03 is: 531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.66 : 2,174.46 = 354.03 : x
  2. Step 2: Convert to fraction form
    1,449.66/2,174.46 = 354.03/x
  3. Step 3: Cross multiply
    1,449.66x = 2,174.46 × 354.03
  4. Step 4: Simplify right side
    1,449.66x = 769,824.07
  5. Step 5: Solve for x
    x = 769,824.07/1,449.66
  6. Step 6: Final answer
    x = 531.04

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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.