Finding the Fourth Proportional to 140.44, 193.69 and 115.66
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Solution
The fourth proportional to 140.44, 193.69 and 115.66 is: 159.51
Step by Step Solution
- Step 1: Write the proportion equation
140.44 : 193.69 = 115.66 : x - Step 2: Convert to fraction form
140.44/193.69 = 115.66/x - Step 3: Cross multiply
140.44x = 193.69 × 115.66 - Step 4: Simplify right side
140.44x = 22,402.19 - Step 5: Solve for x
x = 22,402.19/140.44 - Step 6: Final answer
x = 159.51
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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.