Finding the Fourth Proportional to 167.70, 251.70 and 126.99
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Solution
The fourth proportional to 167.70, 251.70 and 126.99 is: 190.60
Step by Step Solution
- Step 1: Write the proportion equation
167.70 : 251.70 = 126.99 : x - Step 2: Convert to fraction form
167.70/251.70 = 126.99/x - Step 3: Cross multiply
167.70x = 251.70 × 126.99 - Step 4: Simplify right side
167.70x = 31,963.38 - Step 5: Solve for x
x = 31,963.38/167.70 - Step 6: Final answer
x = 190.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.