Finding the Fourth Proportional to 133.21, 183.79 and 77.95
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Solution
The fourth proportional to 133.21, 183.79 and 77.95 is: 107.55
Step by Step Solution
- Step 1: Write the proportion equation
133.21 : 183.79 = 77.95 : x - Step 2: Convert to fraction form
133.21/183.79 = 77.95/x - Step 3: Cross multiply
133.21x = 183.79 × 77.95 - Step 4: Simplify right side
133.21x = 14,326.43 - Step 5: Solve for x
x = 14,326.43/133.21 - Step 6: Final answer
x = 107.55
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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.