Finding the Fourth Proportional to 133.12, 183.62 and 91.67
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Solution
The fourth proportional to 133.12, 183.62 and 91.67 is: 126.45
Step by Step Solution
- Step 1: Write the proportion equation
133.12 : 183.62 = 91.67 : x - Step 2: Convert to fraction form
133.12/183.62 = 91.67/x - Step 3: Cross multiply
133.12x = 183.62 × 91.67 - Step 4: Simplify right side
133.12x = 16,832.10 - Step 5: Solve for x
x = 16,832.10/133.12 - Step 6: Final answer
x = 126.45
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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.