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Finding the Fourth Proportional to 635.94, 877.89 and 449.58

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Solution

The fourth proportional to 635.94, 877.89 and 449.58 is: 620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.94 : 877.89 = 449.58 : x
  2. Step 2: Convert to fraction form
    635.94/877.89 = 449.58/x
  3. Step 3: Cross multiply
    635.94x = 877.89 × 449.58
  4. Step 4: Simplify right side
    635.94x = 394,681.79
  5. Step 5: Solve for x
    x = 394,681.79/635.94
  6. Step 6: Final answer
    x = 620.63

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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.