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Finding the Fourth Proportional to 220.95, 333.93 and 218.52

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Solution

The fourth proportional to 220.95, 333.93 and 218.52 is: 330.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.95 : 333.93 = 218.52 : x
  2. Step 2: Convert to fraction form
    220.95/333.93 = 218.52/x
  3. Step 3: Cross multiply
    220.95x = 333.93 × 218.52
  4. Step 4: Simplify right side
    220.95x = 72,970.38
  5. Step 5: Solve for x
    x = 72,970.38/220.95
  6. Step 6: Final answer
    x = 330.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.