Finding the Third Proportional to 155 and 309.50
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Solution
The third proportional to 155 and 309.50 is: 618.00
Step by Step Solution
- Step 1: Write the proportion equation
155 : 309.50 = 309.50 : x - Step 2: Convert to fraction form
155/309.50 = 309.50/x - Step 3: Cross multiply
155x = 309.50 × 309.50 - Step 4: Simplify right side
155x = 95,790.25 - Step 5: Solve for x
x = 95,790.25/155 - Step 6: Final answer
x = 618.00
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Why These Related Problems?
These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.