Finding the Fourth Proportional to 261.44, 392.68 and 201
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Solution
The fourth proportional to 261.44, 392.68 and 201 is: 301.90
Step by Step Solution
- Step 1: Write the proportion equation
261.44 : 392.68 = 201 : x - Step 2: Convert to fraction form
261.44/392.68 = 201/x - Step 3: Cross multiply
261.44x = 392.68 × 201 - Step 4: Simplify right side
261.44x = 78,928.68 - Step 5: Solve for x
x = 78,928.68/261.44 - Step 6: Final answer
x = 301.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.