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Finding the Fourth Proportional to 368.27, 552.78 and 214.49

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Solution

The fourth proportional to 368.27, 552.78 and 214.49 is: 321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.27 : 552.78 = 214.49 : x
  2. Step 2: Convert to fraction form
    368.27/552.78 = 214.49/x
  3. Step 3: Cross multiply
    368.27x = 552.78 × 214.49
  4. Step 4: Simplify right side
    368.27x = 118,563.02
  5. Step 5: Solve for x
    x = 118,563.02/368.27
  6. Step 6: Final answer
    x = 321.95

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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.