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Finding the Fourth Proportional to 738.72, 1,108.46 and 300.18

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Solution

The fourth proportional to 738.72, 1,108.46 and 300.18 is: 450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.72 : 1,108.46 = 300.18 : x
  2. Step 2: Convert to fraction form
    738.72/1,108.46 = 300.18/x
  3. Step 3: Cross multiply
    738.72x = 1,108.46 × 300.18
  4. Step 4: Simplify right side
    738.72x = 332,738.47
  5. Step 5: Solve for x
    x = 332,738.47/738.72
  6. Step 6: Final answer
    x = 450.43

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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.