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Finding the Fourth Proportional to 301.41, 412.20 and 297.18

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Solution

The fourth proportional to 301.41, 412.20 and 297.18 is: 406.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.41 : 412.20 = 297.18 : x
  2. Step 2: Convert to fraction form
    301.41/412.20 = 297.18/x
  3. Step 3: Cross multiply
    301.41x = 412.20 × 297.18
  4. Step 4: Simplify right side
    301.41x = 122,497.60
  5. Step 5: Solve for x
    x = 122,497.60/301.41
  6. Step 6: Final answer
    x = 406.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.