Finding the Fourth Proportional to 221.74, 305.91 and 131.99
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Solution
The fourth proportional to 221.74, 305.91 and 131.99 is: 182.09
Step by Step Solution
- Step 1: Write the proportion equation
221.74 : 305.91 = 131.99 : x - Step 2: Convert to fraction form
221.74/305.91 = 131.99/x - Step 3: Cross multiply
221.74x = 305.91 × 131.99 - Step 4: Simplify right side
221.74x = 40,376.78 - Step 5: Solve for x
x = 40,376.78/221.74 - Step 6: Final answer
x = 182.09
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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.