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Finding the Fourth Proportional to 223.23, 307.60 and 190.42

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Solution

The fourth proportional to 223.23, 307.60 and 190.42 is: 262.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.23 : 307.60 = 190.42 : x
  2. Step 2: Convert to fraction form
    223.23/307.60 = 190.42/x
  3. Step 3: Cross multiply
    223.23x = 307.60 × 190.42
  4. Step 4: Simplify right side
    223.23x = 58,573.19
  5. Step 5: Solve for x
    x = 58,573.19/223.23
  6. Step 6: Final answer
    x = 262.39

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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.