Finding the Fourth Proportional to 143.99, 216.79 and 126.98
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Solution
The fourth proportional to 143.99, 216.79 and 126.98 is: 191.18
Step by Step Solution
- Step 1: Write the proportion equation
143.99 : 216.79 = 126.98 : x - Step 2: Convert to fraction form
143.99/216.79 = 126.98/x - Step 3: Cross multiply
143.99x = 216.79 × 126.98 - Step 4: Simplify right side
143.99x = 27,527.99 - Step 5: Solve for x
x = 27,527.99/143.99 - Step 6: Final answer
x = 191.18
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.