Finding the Fourth Proportional to 354.39, 489.08 and 199.14
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Solution
The fourth proportional to 354.39, 489.08 and 199.14 is: 274.82
Step by Step Solution
- Step 1: Write the proportion equation
354.39 : 489.08 = 199.14 : x - Step 2: Convert to fraction form
354.39/489.08 = 199.14/x - Step 3: Cross multiply
354.39x = 489.08 × 199.14 - Step 4: Simplify right side
354.39x = 97,394.40 - Step 5: Solve for x
x = 97,394.40/354.39 - Step 6: Final answer
x = 274.82
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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.