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Finding the Fourth Proportional to 449.27, 620.07 and 325.50

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Solution

The fourth proportional to 449.27, 620.07 and 325.50 is: 449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.27 : 620.07 = 325.50 : x
  2. Step 2: Convert to fraction form
    449.27/620.07 = 325.50/x
  3. Step 3: Cross multiply
    449.27x = 620.07 × 325.50
  4. Step 4: Simplify right side
    449.27x = 201,832.79
  5. Step 5: Solve for x
    x = 201,832.79/449.27
  6. Step 6: Final answer
    x = 449.25

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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.