Finding the Fourth Proportional to 285.18, 427.97 and 122.91
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Solution
The fourth proportional to 285.18, 427.97 and 122.91 is: 184.45
Step by Step Solution
- Step 1: Write the proportion equation
285.18 : 427.97 = 122.91 : x - Step 2: Convert to fraction form
285.18/427.97 = 122.91/x - Step 3: Cross multiply
285.18x = 427.97 × 122.91 - Step 4: Simplify right side
285.18x = 52,601.79 - Step 5: Solve for x
x = 52,601.79/285.18 - Step 6: Final answer
x = 184.45
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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.