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Finding the Fourth Proportional to 368.66, 552.85 and 214.63

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Solution

The fourth proportional to 368.66, 552.85 and 214.63 is: 321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.66 : 552.85 = 214.63 : x
  2. Step 2: Convert to fraction form
    368.66/552.85 = 214.63/x
  3. Step 3: Cross multiply
    368.66x = 552.85 × 214.63
  4. Step 4: Simplify right side
    368.66x = 118,658.20
  5. Step 5: Solve for x
    x = 118,658.20/368.66
  6. Step 6: Final answer
    x = 321.86

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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.