Finding the Fourth Proportional to 176.70, 243.69 and 107.70
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Solution
The fourth proportional to 176.70, 243.69 and 107.70 is: 148.53
Step by Step Solution
- Step 1: Write the proportion equation
176.70 : 243.69 = 107.70 : x - Step 2: Convert to fraction form
176.70/243.69 = 107.70/x - Step 3: Cross multiply
176.70x = 243.69 × 107.70 - Step 4: Simplify right side
176.70x = 26,245.41 - Step 5: Solve for x
x = 26,245.41/176.70 - Step 6: Final answer
x = 148.53
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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.