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Finding the Fourth Proportional to 484.70, 671.27 and 449.15

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Solution

The fourth proportional to 484.70, 671.27 and 449.15 is: 622.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.70 : 671.27 = 449.15 : x
  2. Step 2: Convert to fraction form
    484.70/671.27 = 449.15/x
  3. Step 3: Cross multiply
    484.70x = 671.27 × 449.15
  4. Step 4: Simplify right side
    484.70x = 301,495.32
  5. Step 5: Solve for x
    x = 301,495.32/484.70
  6. Step 6: Final answer
    x = 622.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.