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Finding the Fourth Proportional to 222.74, 306.93 and 188.18

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Solution

The fourth proportional to 222.74, 306.93 and 188.18 is: 259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.74 : 306.93 = 188.18 : x
  2. Step 2: Convert to fraction form
    222.74/306.93 = 188.18/x
  3. Step 3: Cross multiply
    222.74x = 306.93 × 188.18
  4. Step 4: Simplify right side
    222.74x = 57,758.09
  5. Step 5: Solve for x
    x = 57,758.09/222.74
  6. Step 6: Final answer
    x = 259.31

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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.