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Finding the Fourth Proportional to 449.35, 671.19 and 418.37

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Solution

The fourth proportional to 449.35, 671.19 and 418.37 is: 624.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.35 : 671.19 = 418.37 : x
  2. Step 2: Convert to fraction form
    449.35/671.19 = 418.37/x
  3. Step 3: Cross multiply
    449.35x = 671.19 × 418.37
  4. Step 4: Simplify right side
    449.35x = 280,800.84
  5. Step 5: Solve for x
    x = 280,800.84/449.35
  6. Step 6: Final answer
    x = 624.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.