Finding the Fourth Proportional to 331.95, 457.97 and 199.18
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Solution
The fourth proportional to 331.95, 457.97 and 199.18 is: 274.79
Step by Step Solution
- Step 1: Write the proportion equation
331.95 : 457.97 = 199.18 : x - Step 2: Convert to fraction form
331.95/457.97 = 199.18/x - Step 3: Cross multiply
331.95x = 457.97 × 199.18 - Step 4: Simplify right side
331.95x = 91,215.68 - Step 5: Solve for x
x = 91,215.68/331.95 - Step 6: Final answer
x = 274.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.