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Finding the Fourth Proportional to 737.53, 1,105.63 and 445.12

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Solution

The fourth proportional to 737.53, 1,105.63 and 445.12 is: 667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.53 : 1,105.63 = 445.12 : x
  2. Step 2: Convert to fraction form
    737.53/1,105.63 = 445.12/x
  3. Step 3: Cross multiply
    737.53x = 1,105.63 × 445.12
  4. Step 4: Simplify right side
    737.53x = 492,138.03
  5. Step 5: Solve for x
    x = 492,138.03/737.53
  6. Step 6: Final answer
    x = 667.28

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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.