Finding the Fourth Proportional to 133.18, 183.80 and 77.94
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Solution
The fourth proportional to 133.18, 183.80 and 77.94 is: 107.55
Step by Step Solution
- Step 1: Write the proportion equation
133.18 : 183.80 = 77.94 : x - Step 2: Convert to fraction form
133.18/183.80 = 77.94/x - Step 3: Cross multiply
133.18x = 183.80 × 77.94 - Step 4: Simplify right side
133.18x = 14,324.06 - Step 5: Solve for x
x = 14,324.06/133.18 - 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.