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Finding the Fourth Proportional to 737.79, 1,106.85 and 347.80

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Solution

The fourth proportional to 737.79, 1,106.85 and 347.80 is: 521.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.79 : 1,106.85 = 347.80 : x
  2. Step 2: Convert to fraction form
    737.79/1,106.85 = 347.80/x
  3. Step 3: Cross multiply
    737.79x = 1,106.85 × 347.80
  4. Step 4: Simplify right side
    737.79x = 384,960.97
  5. Step 5: Solve for x
    x = 384,960.97/737.79
  6. Step 6: Final answer
    x = 521.77

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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.