Finding the Fourth Proportional to 211.23, 291.26 and 198.68
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Solution
The fourth proportional to 211.23, 291.26 and 198.68 is: 273.95
Step by Step Solution
- Step 1: Write the proportion equation
211.23 : 291.26 = 198.68 : x - Step 2: Convert to fraction form
211.23/291.26 = 198.68/x - Step 3: Cross multiply
211.23x = 291.26 × 198.68 - Step 4: Simplify right side
211.23x = 57,866.58 - Step 5: Solve for x
x = 57,866.58/211.23 - Step 6: Final answer
x = 273.95
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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.