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Finding the Fourth Proportional to 380.18, 524.67 and 214.39

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Solution

The fourth proportional to 380.18, 524.67 and 214.39 is: 295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.18 : 524.67 = 214.39 : x
  2. Step 2: Convert to fraction form
    380.18/524.67 = 214.39/x
  3. Step 3: Cross multiply
    380.18x = 524.67 × 214.39
  4. Step 4: Simplify right side
    380.18x = 112,480.90
  5. Step 5: Solve for x
    x = 112,480.90/380.18
  6. Step 6: Final answer
    x = 295.86

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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.