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Finding the Fourth Proportional to 490.91, 677.37 and 325.06

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Solution

The fourth proportional to 490.91, 677.37 and 325.06 is: 448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.91 : 677.37 = 325.06 : x
  2. Step 2: Convert to fraction form
    490.91/677.37 = 325.06/x
  3. Step 3: Cross multiply
    490.91x = 677.37 × 325.06
  4. Step 4: Simplify right side
    490.91x = 220,185.89
  5. Step 5: Solve for x
    x = 220,185.89/490.91
  6. Step 6: Final answer
    x = 448.53

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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.