Finding the Fourth Proportional to 177.73, 245.07 and 122.38
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Solution
The fourth proportional to 177.73, 245.07 and 122.38 is: 168.75
Step by Step Solution
- Step 1: Write the proportion equation
177.73 : 245.07 = 122.38 : x - Step 2: Convert to fraction form
177.73/245.07 = 122.38/x - Step 3: Cross multiply
177.73x = 245.07 × 122.38 - Step 4: Simplify right side
177.73x = 29,991.05 - Step 5: Solve for x
x = 29,991.05/177.73 - Step 6: Final answer
x = 168.75
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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.