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Finding the Fourth Proportional to 737.49, 1,106.61 and 298.78

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Solution

The fourth proportional to 737.49, 1,106.61 and 298.78 is: 448.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.49 : 1,106.61 = 298.78 : x
  2. Step 2: Convert to fraction form
    737.49/1,106.61 = 298.78/x
  3. Step 3: Cross multiply
    737.49x = 1,106.61 × 298.78
  4. Step 4: Simplify right side
    737.49x = 330,638.36
  5. Step 5: Solve for x
    x = 330,638.36/737.49
  6. Step 6: Final answer
    x = 448.33

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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.