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Finding the Fourth Proportional to 379.88, 524.11 and 214.06

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Solution

The fourth proportional to 379.88, 524.11 and 214.06 is: 295.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.88 : 524.11 = 214.06 : x
  2. Step 2: Convert to fraction form
    379.88/524.11 = 214.06/x
  3. Step 3: Cross multiply
    379.88x = 524.11 × 214.06
  4. Step 4: Simplify right side
    379.88x = 112,187.30
  5. Step 5: Solve for x
    x = 112,187.30/379.88
  6. Step 6: Final answer
    x = 295.33

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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.