Finding the Third Proportional to 258 and 665
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Solution
The third proportional to 258 and 665 is: 1,714.05
Step by Step Solution
- Step 1: Write the proportion equation
258 : 665 = 665 : x - Step 2: Convert to fraction form
258/665 = 665/x - Step 3: Cross multiply
258x = 665 × 665 - Step 4: Simplify right side
258x = 442,225 - Step 5: Solve for x
x = 442,225/258 - Step 6: Final answer
x = 1,714.05
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Why These Related Problems?
These problems maintain the same ratio (2.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.