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Finding the Fourth Proportional to 220.86, 304.83 and 133.58

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Solution

The fourth proportional to 220.86, 304.83 and 133.58 is: 184.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.86 : 304.83 = 133.58 : x
  2. Step 2: Convert to fraction form
    220.86/304.83 = 133.58/x
  3. Step 3: Cross multiply
    220.86x = 304.83 × 133.58
  4. Step 4: Simplify right side
    220.86x = 40,719.95
  5. Step 5: Solve for x
    x = 40,719.95/220.86
  6. Step 6: Final answer
    x = 184.37

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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.