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Finding the Fourth Proportional to 241.72, 360.79 and 213.24

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Solution

The fourth proportional to 241.72, 360.79 and 213.24 is: 318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.72 : 360.79 = 213.24 : x
  2. Step 2: Convert to fraction form
    241.72/360.79 = 213.24/x
  3. Step 3: Cross multiply
    241.72x = 360.79 × 213.24
  4. Step 4: Simplify right side
    241.72x = 76,934.86
  5. Step 5: Solve for x
    x = 76,934.86/241.72
  6. Step 6: Final answer
    x = 318.28

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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.