Finding the Fourth Proportional to 153.44, 211.73 and 91.26
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Solution
The fourth proportional to 153.44, 211.73 and 91.26 is: 125.93
Step by Step Solution
- Step 1: Write the proportion equation
153.44 : 211.73 = 91.26 : x - Step 2: Convert to fraction form
153.44/211.73 = 91.26/x - Step 3: Cross multiply
153.44x = 211.73 × 91.26 - Step 4: Simplify right side
153.44x = 19,323.05 - Step 5: Solve for x
x = 19,323.05/153.44 - Step 6: Final answer
x = 125.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.