Finding the Fourth Proportional to 1,225.99, 1,838.97 and 445.99
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Solution
The fourth proportional to 1,225.99, 1,838.97 and 445.99 is: 668.98
Step by Step Solution
- Step 1: Write the proportion equation
1,225.99 : 1,838.97 = 445.99 : x - Step 2: Convert to fraction form
1,225.99/1,838.97 = 445.99/x - Step 3: Cross multiply
1,225.99x = 1,838.97 × 445.99 - Step 4: Simplify right side
1,225.99x = 820,162.23 - Step 5: Solve for x
x = 820,162.23/1,225.99 - Step 6: Final answer
x = 668.98
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Similar ratio
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1.5x scale
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.