Finding the Fourth Proportional to 398.21, 548.84 and 266.99
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Solution
The fourth proportional to 398.21, 548.84 and 266.99 is: 367.98
Step by Step Solution
- Step 1: Write the proportion equation
398.21 : 548.84 = 266.99 : x - Step 2: Convert to fraction form
398.21/548.84 = 266.99/x - Step 3: Cross multiply
398.21x = 548.84 × 266.99 - Step 4: Simplify right side
398.21x = 146,532.71 - Step 5: Solve for x
x = 146,532.71/398.21 - Step 6: Final answer
x = 367.98
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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.