Finding the Fourth Proportional to 258.26, 386.70 and 177.26
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Solution
The fourth proportional to 258.26, 386.70 and 177.26 is: 265.42
Step by Step Solution
- Step 1: Write the proportion equation
258.26 : 386.70 = 177.26 : x - Step 2: Convert to fraction form
258.26/386.70 = 177.26/x - Step 3: Cross multiply
258.26x = 386.70 × 177.26 - Step 4: Simplify right side
258.26x = 68,546.44 - Step 5: Solve for x
x = 68,546.44/258.26 - Step 6: Final answer
x = 265.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.