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Finding the Fourth Proportional to 354.19, 488.81 and 214.27

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Solution

The fourth proportional to 354.19, 488.81 and 214.27 is: 295.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.19 : 488.81 = 214.27 : x
  2. Step 2: Convert to fraction form
    354.19/488.81 = 214.27/x
  3. Step 3: Cross multiply
    354.19x = 488.81 × 214.27
  4. Step 4: Simplify right side
    354.19x = 104,736.25
  5. Step 5: Solve for x
    x = 104,736.25/354.19
  6. Step 6: Final answer
    x = 295.71

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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.