Finding the Fourth Proportional to 133.09, 199.70 and 122.75
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Solution
The fourth proportional to 133.09, 199.70 and 122.75 is: 184.18
Step by Step Solution
- Step 1: Write the proportion equation
133.09 : 199.70 = 122.75 : x - Step 2: Convert to fraction form
133.09/199.70 = 122.75/x - Step 3: Cross multiply
133.09x = 199.70 × 122.75 - Step 4: Simplify right side
133.09x = 24,513.18 - Step 5: Solve for x
x = 24,513.18/133.09 - Step 6: Final answer
x = 184.18
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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.