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Finding the Fourth Proportional to 737.03, 1,105.58 and 390.69

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Solution

The fourth proportional to 737.03, 1,105.58 and 390.69 is: 586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.03 : 1,105.58 = 390.69 : x
  2. Step 2: Convert to fraction form
    737.03/1,105.58 = 390.69/x
  3. Step 3: Cross multiply
    737.03x = 1,105.58 × 390.69
  4. Step 4: Simplify right side
    737.03x = 431,940.03
  5. Step 5: Solve for x
    x = 431,940.03/737.03
  6. Step 6: Final answer
    x = 586.05

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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.