Finding the Fourth Proportional to 354.44, 489.14 and 199.19
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Solution
The fourth proportional to 354.44, 489.14 and 199.19 is: 274.89
Step by Step Solution
- Step 1: Write the proportion equation
354.44 : 489.14 = 199.19 : x - Step 2: Convert to fraction form
354.44/489.14 = 199.19/x - Step 3: Cross multiply
354.44x = 489.14 × 199.19 - Step 4: Simplify right side
354.44x = 97,432.02 - Step 5: Solve for x
x = 97,432.02/354.44 - Step 6: Final answer
x = 274.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.