Finding the Fourth Proportional to 331.91, 457.99 and 226.79
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Solution
The fourth proportional to 331.91, 457.99 and 226.79 is: 312.94
Step by Step Solution
- Step 1: Write the proportion equation
331.91 : 457.99 = 226.79 : x - Step 2: Convert to fraction form
331.91/457.99 = 226.79/x - Step 3: Cross multiply
331.91x = 457.99 × 226.79 - Step 4: Simplify right side
331.91x = 103,867.55 - Step 5: Solve for x
x = 103,867.55/331.91 - Step 6: Final answer
x = 312.94
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.