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Finding the Fourth Proportional to 368.62, 552.93 and 214.57

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Solution

The fourth proportional to 368.62, 552.93 and 214.57 is: 321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.62 : 552.93 = 214.57 : x
  2. Step 2: Convert to fraction form
    368.62/552.93 = 214.57/x
  3. Step 3: Cross multiply
    368.62x = 552.93 × 214.57
  4. Step 4: Simplify right side
    368.62x = 118,638.97
  5. Step 5: Solve for x
    x = 118,638.97/368.62
  6. Step 6: Final answer
    x = 321.85

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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.