Finding the Fourth Proportional to 153.93, 212.41 and 83.99
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Solution
The fourth proportional to 153.93, 212.41 and 83.99 is: 115.90
Step by Step Solution
- Step 1: Write the proportion equation
153.93 : 212.41 = 83.99 : x - Step 2: Convert to fraction form
153.93/212.41 = 83.99/x - Step 3: Cross multiply
153.93x = 212.41 × 83.99 - Step 4: Simplify right side
153.93x = 17,839.25 - Step 5: Solve for x
x = 17,839.25/153.93 - Step 6: Final answer
x = 115.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.