Finding the Fourth Proportional to 206.74, 309.99 and 125.63
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Solution
The fourth proportional to 206.74, 309.99 and 125.63 is: 188.38
Step by Step Solution
- Step 1: Write the proportion equation
206.74 : 309.99 = 125.63 : x - Step 2: Convert to fraction form
206.74/309.99 = 125.63/x - Step 3: Cross multiply
206.74x = 309.99 × 125.63 - Step 4: Simplify right side
206.74x = 38,944.82 - Step 5: Solve for x
x = 38,944.82/206.74 - Step 6: Final answer
x = 188.38
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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.