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Finding the Fourth Proportional to 747.56, 1,120.34 and 336.62

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Solution

The fourth proportional to 747.56, 1,120.34 and 336.62 is: 504.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.56 : 1,120.34 = 336.62 : x
  2. Step 2: Convert to fraction form
    747.56/1,120.34 = 336.62/x
  3. Step 3: Cross multiply
    747.56x = 1,120.34 × 336.62
  4. Step 4: Simplify right side
    747.56x = 377,128.85
  5. Step 5: Solve for x
    x = 377,128.85/747.56
  6. Step 6: Final answer
    x = 504.48

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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.