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Finding the Fourth Proportional to 449.48, 620.30 and 262.94

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Solution

The fourth proportional to 449.48, 620.30 and 262.94 is: 362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.48 : 620.30 = 262.94 : x
  2. Step 2: Convert to fraction form
    449.48/620.30 = 262.94/x
  3. Step 3: Cross multiply
    449.48x = 620.30 × 262.94
  4. Step 4: Simplify right side
    449.48x = 163,101.68
  5. Step 5: Solve for x
    x = 163,101.68/449.48
  6. Step 6: Final answer
    x = 362.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.