Finding the Fourth Proportional to 361.71, 499.08 and 221.79
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Solution
The fourth proportional to 361.71, 499.08 and 221.79 is: 306.02
Step by Step Solution
- Step 1: Write the proportion equation
361.71 : 499.08 = 221.79 : x - Step 2: Convert to fraction form
361.71/499.08 = 221.79/x - Step 3: Cross multiply
361.71x = 499.08 × 221.79 - Step 4: Simplify right side
361.71x = 110,690.95 - Step 5: Solve for x
x = 110,690.95/361.71 - Step 6: Final answer
x = 306.02
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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.