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Finding the Fourth Proportional to 250.12, 344.45 and 216.91

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Solution

The fourth proportional to 250.12, 344.45 and 216.91 is: 298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.12 : 344.45 = 216.91 : x
  2. Step 2: Convert to fraction form
    250.12/344.45 = 216.91/x
  3. Step 3: Cross multiply
    250.12x = 344.45 × 216.91
  4. Step 4: Simplify right side
    250.12x = 74,711.84
  5. Step 5: Solve for x
    x = 74,711.84/250.12
  6. Step 6: Final answer
    x = 298.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.