Finding the Fourth Proportional to 611.06, 843.08 and 378.26
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Solution
The fourth proportional to 611.06, 843.08 and 378.26 is: 521.89
Step by Step Solution
- Step 1: Write the proportion equation
611.06 : 843.08 = 378.26 : x - Step 2: Convert to fraction form
611.06/843.08 = 378.26/x - Step 3: Cross multiply
611.06x = 843.08 × 378.26 - Step 4: Simplify right side
611.06x = 318,903.44 - Step 5: Solve for x
x = 318,903.44/611.06 - Step 6: Final answer
x = 521.89
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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.