Finding the Fourth Proportional to 400.91, 601.40 and 126.99
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Solution
The fourth proportional to 400.91, 601.40 and 126.99 is: 190.50
Step by Step Solution
- Step 1: Write the proportion equation
400.91 : 601.40 = 126.99 : x - Step 2: Convert to fraction form
400.91/601.40 = 126.99/x - Step 3: Cross multiply
400.91x = 601.40 × 126.99 - Step 4: Simplify right side
400.91x = 76,372.10 - Step 5: Solve for x
x = 76,372.10/400.91 - Step 6: Final answer
x = 190.50
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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.