Finding the Fourth Proportional to 133.19, 183.80 and 84.14
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Solution
The fourth proportional to 133.19, 183.80 and 84.14 is: 116.11
Step by Step Solution
- Step 1: Write the proportion equation
133.19 : 183.80 = 84.14 : x - Step 2: Convert to fraction form
133.19/183.80 = 84.14/x - Step 3: Cross multiply
133.19x = 183.80 × 84.14 - Step 4: Simplify right side
133.19x = 15,464.93 - Step 5: Solve for x
x = 15,464.93/133.19 - Step 6: Final answer
x = 116.11
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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.