Finding the Fourth Proportional to 133.26, 183.74 and 121.64
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Solution
The fourth proportional to 133.26, 183.74 and 121.64 is: 167.72
Step by Step Solution
- Step 1: Write the proportion equation
133.26 : 183.74 = 121.64 : x - Step 2: Convert to fraction form
133.26/183.74 = 121.64/x - Step 3: Cross multiply
133.26x = 183.74 × 121.64 - Step 4: Simplify right side
133.26x = 22,350.13 - Step 5: Solve for x
x = 22,350.13/133.26 - Step 6: Final answer
x = 167.72
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.