Finding the Fourth Proportional to 204.31, 306.42 and 126.99
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Solution
The fourth proportional to 204.31, 306.42 and 126.99 is: 190.45
Step by Step Solution
- Step 1: Write the proportion equation
204.31 : 306.42 = 126.99 : x - Step 2: Convert to fraction form
204.31/306.42 = 126.99/x - Step 3: Cross multiply
204.31x = 306.42 × 126.99 - Step 4: Simplify right side
204.31x = 38,911.80 - Step 5: Solve for x
x = 38,911.80/204.31 - Step 6: Final answer
x = 190.45
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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.