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Finding the Fourth Proportional to 246.44, 367.40 and 218.90

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Solution

The fourth proportional to 246.44, 367.40 and 218.90 is: 326.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.44 : 367.40 = 218.90 : x
  2. Step 2: Convert to fraction form
    246.44/367.40 = 218.90/x
  3. Step 3: Cross multiply
    246.44x = 367.40 × 218.90
  4. Step 4: Simplify right side
    246.44x = 80,423.86
  5. Step 5: Solve for x
    x = 80,423.86/246.44
  6. Step 6: Final answer
    x = 326.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.