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Finding the Fourth Proportional to 415.44, 573.21 and 268.11

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Solution

The fourth proportional to 415.44, 573.21 and 268.11 is: 369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.44 : 573.21 = 268.11 : x
  2. Step 2: Convert to fraction form
    415.44/573.21 = 268.11/x
  3. Step 3: Cross multiply
    415.44x = 573.21 × 268.11
  4. Step 4: Simplify right side
    415.44x = 153,683.33
  5. Step 5: Solve for x
    x = 153,683.33/415.44
  6. Step 6: Final answer
    x = 369.93

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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.