Finding the Fourth Proportional to 133.19, 183.81 and 74.18
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Solution
The fourth proportional to 133.19, 183.81 and 74.18 is: 102.37
Step by Step Solution
- Step 1: Write the proportion equation
133.19 : 183.81 = 74.18 : x - Step 2: Convert to fraction form
133.19/183.81 = 74.18/x - Step 3: Cross multiply
133.19x = 183.81 × 74.18 - Step 4: Simplify right side
133.19x = 13,634.18 - Step 5: Solve for x
x = 13,634.18/133.19 - Step 6: Final answer
x = 102.37
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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.