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Finding the Fourth Proportional to 219.14, 327.13 and 190.45

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Solution

The fourth proportional to 219.14, 327.13 and 190.45 is: 284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.14 : 327.13 = 190.45 : x
  2. Step 2: Convert to fraction form
    219.14/327.13 = 190.45/x
  3. Step 3: Cross multiply
    219.14x = 327.13 × 190.45
  4. Step 4: Simplify right side
    219.14x = 62,301.91
  5. Step 5: Solve for x
    x = 62,301.91/219.14
  6. Step 6: Final answer
    x = 284.30

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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.