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Finding the Fourth Proportional to 223.55, 308.41 and 153.62

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Solution

The fourth proportional to 223.55, 308.41 and 153.62 is: 211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.55 : 308.41 = 153.62 : x
  2. Step 2: Convert to fraction form
    223.55/308.41 = 153.62/x
  3. Step 3: Cross multiply
    223.55x = 308.41 × 153.62
  4. Step 4: Simplify right side
    223.55x = 47,378.33
  5. Step 5: Solve for x
    x = 47,378.33/223.55
  6. Step 6: Final answer
    x = 211.93

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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.