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Finding the Fourth Proportional to 354.18, 488.52 and 214.25

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Solution

The fourth proportional to 354.18, 488.52 and 214.25 is: 295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.18 : 488.52 = 214.25 : x
  2. Step 2: Convert to fraction form
    354.18/488.52 = 214.25/x
  3. Step 3: Cross multiply
    354.18x = 488.52 × 214.25
  4. Step 4: Simplify right side
    354.18x = 104,662.97
  5. Step 5: Solve for x
    x = 104,662.97/354.18
  6. Step 6: Final answer
    x = 295.51

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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.