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Finding the Fourth Proportional to 227.12, 314.90 and 214.82

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Solution

The fourth proportional to 227.12, 314.90 and 214.82 is: 297.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.12 : 314.90 = 214.82 : x
  2. Step 2: Convert to fraction form
    227.12/314.90 = 214.82/x
  3. Step 3: Cross multiply
    227.12x = 314.90 × 214.82
  4. Step 4: Simplify right side
    227.12x = 67,647.36
  5. Step 5: Solve for x
    x = 67,647.36/227.12
  6. Step 6: Final answer
    x = 297.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.