Finding the Fourth Proportional to 194.70, 291.93 and 91.92
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Solution
The fourth proportional to 194.70, 291.93 and 91.92 is: 137.82
Step by Step Solution
- Step 1: Write the proportion equation
194.70 : 291.93 = 91.92 : x - Step 2: Convert to fraction form
194.70/291.93 = 91.92/x - Step 3: Cross multiply
194.70x = 291.93 × 91.92 - Step 4: Simplify right side
194.70x = 26,834.21 - Step 5: Solve for x
x = 26,834.21/194.70 - Step 6: Final answer
x = 137.82
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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.