Finding the Fourth Proportional to 94.34, 141.42 and 74.18
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Solution
The fourth proportional to 94.34, 141.42 and 74.18 is: 111.20
Step by Step Solution
- Step 1: Write the proportion equation
94.34 : 141.42 = 74.18 : x - Step 2: Convert to fraction form
94.34/141.42 = 74.18/x - Step 3: Cross multiply
94.34x = 141.42 × 74.18 - Step 4: Simplify right side
94.34x = 10,490.54 - Step 5: Solve for x
x = 10,490.54/94.34 - Step 6: Final answer
x = 111.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.