Finding the Fourth Proportional to 133.19, 183.74 and 84
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Solution
The fourth proportional to 133.19, 183.74 and 84 is: 115.88
Step by Step Solution
- Step 1: Write the proportion equation
133.19 : 183.74 = 84 : x - Step 2: Convert to fraction form
133.19/183.74 = 84/x - Step 3: Cross multiply
133.19x = 183.74 × 84 - Step 4: Simplify right side
133.19x = 15,433.74 - Step 5: Solve for x
x = 15,433.74/133.19 - Step 6: Final answer
x = 115.88
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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.