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Finding the Fourth Proportional to 737.81, 1,105.91 and 347.56

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Solution

The fourth proportional to 737.81, 1,105.91 and 347.56 is: 520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.81 : 1,105.91 = 347.56 : x
  2. Step 2: Convert to fraction form
    737.81/1,105.91 = 347.56/x
  3. Step 3: Cross multiply
    737.81x = 1,105.91 × 347.56
  4. Step 4: Simplify right side
    737.81x = 384,368.34
  5. Step 5: Solve for x
    x = 384,368.34/737.81
  6. Step 6: Final answer
    x = 520.96

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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.