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Finding the Fourth Proportional to 379.39, 568.53 and 214.95

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Solution

The fourth proportional to 379.39, 568.53 and 214.95 is: 322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.39 : 568.53 = 214.95 : x
  2. Step 2: Convert to fraction form
    379.39/568.53 = 214.95/x
  3. Step 3: Cross multiply
    379.39x = 568.53 × 214.95
  4. Step 4: Simplify right side
    379.39x = 122,205.52
  5. Step 5: Solve for x
    x = 122,205.52/379.39
  6. Step 6: Final answer
    x = 322.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.