Finding the Fourth Proportional to 331.28, 496.77 and 125.70
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Solution
The fourth proportional to 331.28, 496.77 and 125.70 is: 188.49
Step by Step Solution
- Step 1: Write the proportion equation
331.28 : 496.77 = 125.70 : x - Step 2: Convert to fraction form
331.28/496.77 = 125.70/x - Step 3: Cross multiply
331.28x = 496.77 × 125.70 - Step 4: Simplify right side
331.28x = 62,443.99 - Step 5: Solve for x
x = 62,443.99/331.28 - Step 6: Final answer
x = 188.49
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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.