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Finding the Fourth Proportional to 637.25, 879.41 and 361.25

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Solution

The fourth proportional to 637.25, 879.41 and 361.25 is: 498.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.25 : 879.41 = 361.25 : x
  2. Step 2: Convert to fraction form
    637.25/879.41 = 361.25/x
  3. Step 3: Cross multiply
    637.25x = 879.41 × 361.25
  4. Step 4: Simplify right side
    637.25x = 317,685.06
  5. Step 5: Solve for x
    x = 317,685.06/637.25
  6. Step 6: Final answer
    x = 498.53

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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.