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Finding the Fourth Proportional to 736.45, 1,105.19 and 303.61

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Solution

The fourth proportional to 736.45, 1,105.19 and 303.61 is: 455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.45 : 1,105.19 = 303.61 : x
  2. Step 2: Convert to fraction form
    736.45/1,105.19 = 303.61/x
  3. Step 3: Cross multiply
    736.45x = 1,105.19 × 303.61
  4. Step 4: Simplify right side
    736.45x = 335,544.81
  5. Step 5: Solve for x
    x = 335,544.81/736.45
  6. Step 6: Final answer
    x = 455.62

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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.