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Finding the Fourth Proportional to 737.34, 1,104.31 and 428.42

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Solution

The fourth proportional to 737.34, 1,104.31 and 428.42 is: 641.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.34 : 1,104.31 = 428.42 : x
  2. Step 2: Convert to fraction form
    737.34/1,104.31 = 428.42/x
  3. Step 3: Cross multiply
    737.34x = 1,104.31 × 428.42
  4. Step 4: Simplify right side
    737.34x = 473,108.49
  5. Step 5: Solve for x
    x = 473,108.49/737.34
  6. Step 6: Final answer
    x = 641.64

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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.