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Finding the Fourth Proportional to 677.75, 935.30 and 367.25

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Solution

The fourth proportional to 677.75, 935.30 and 367.25 is: 506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.75 : 935.30 = 367.25 : x
  2. Step 2: Convert to fraction form
    677.75/935.30 = 367.25/x
  3. Step 3: Cross multiply
    677.75x = 935.30 × 367.25
  4. Step 4: Simplify right side
    677.75x = 343,487.09
  5. Step 5: Solve for x
    x = 343,487.09/677.75
  6. Step 6: Final answer
    x = 506.81

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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.