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Finding the Fourth Proportional to 243.24, 334.44 and 216.77

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Solution

The fourth proportional to 243.24, 334.44 and 216.77 is: 298.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.24 : 334.44 = 216.77 : x
  2. Step 2: Convert to fraction form
    243.24/334.44 = 216.77/x
  3. Step 3: Cross multiply
    243.24x = 334.44 × 216.77
  4. Step 4: Simplify right side
    243.24x = 72,493.80
  5. Step 5: Solve for x
    x = 72,493.80/243.24
  6. Step 6: Final answer
    x = 298.03

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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.