Finding the Fourth Proportional to 285.30, 427.91 and 122.99
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Solution
The fourth proportional to 285.30, 427.91 and 122.99 is: 184.46
Step by Step Solution
- Step 1: Write the proportion equation
285.30 : 427.91 = 122.99 : x - Step 2: Convert to fraction form
285.30/427.91 = 122.99/x - Step 3: Cross multiply
285.30x = 427.91 × 122.99 - Step 4: Simplify right side
285.30x = 52,625.90 - Step 5: Solve for x
x = 52,625.90/285.30 - Step 6: Final answer
x = 184.46
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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.