Finding the Fourth Proportional to 261.26, 360.21 and 191.26
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Solution
The fourth proportional to 261.26, 360.21 and 191.26 is: 263.70
Step by Step Solution
- Step 1: Write the proportion equation
261.26 : 360.21 = 191.26 : x - Step 2: Convert to fraction form
261.26/360.21 = 191.26/x - Step 3: Cross multiply
261.26x = 360.21 × 191.26 - Step 4: Simplify right side
261.26x = 68,893.76 - Step 5: Solve for x
x = 68,893.76/261.26 - Step 6: Final answer
x = 263.70
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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.