Finding the Fourth Proportional to 398.88, 550.08 and 352.08
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Solution
The fourth proportional to 398.88, 550.08 and 352.08 is: 485.54
Step by Step Solution
- Step 1: Write the proportion equation
398.88 : 550.08 = 352.08 : x - Step 2: Convert to fraction form
398.88/550.08 = 352.08/x - Step 3: Cross multiply
398.88x = 550.08 × 352.08 - Step 4: Simplify right side
398.88x = 193,672.17 - Step 5: Solve for x
x = 193,672.17/398.88 - Step 6: Final answer
x = 485.54
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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.