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Finding the Fourth Proportional to 216.94, 297.53 and 208.12

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Solution

The fourth proportional to 216.94, 297.53 and 208.12 is: 285.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.94 : 297.53 = 208.12 : x
  2. Step 2: Convert to fraction form
    216.94/297.53 = 208.12/x
  3. Step 3: Cross multiply
    216.94x = 297.53 × 208.12
  4. Step 4: Simplify right side
    216.94x = 61,921.94
  5. Step 5: Solve for x
    x = 61,921.94/216.94
  6. Step 6: Final answer
    x = 285.43

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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.