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Finding the Fourth Proportional to 737.37, 1,103.90 and 389.88

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Solution

The fourth proportional to 737.37, 1,103.90 and 389.88 is: 583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.37 : 1,103.90 = 389.88 : x
  2. Step 2: Convert to fraction form
    737.37/1,103.90 = 389.88/x
  3. Step 3: Cross multiply
    737.37x = 1,103.90 × 389.88
  4. Step 4: Simplify right side
    737.37x = 430,386.58
  5. Step 5: Solve for x
    x = 430,386.58/737.37
  6. Step 6: Final answer
    x = 583.68

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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.