Finding the Fourth Proportional to 354.48, 489.12 and 199.26
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Solution
The fourth proportional to 354.48, 489.12 and 199.26 is: 274.94
Step by Step Solution
- Step 1: Write the proportion equation
354.48 : 489.12 = 199.26 : x - Step 2: Convert to fraction form
354.48/489.12 = 199.26/x - Step 3: Cross multiply
354.48x = 489.12 × 199.26 - Step 4: Simplify right side
354.48x = 97,462.05 - Step 5: Solve for x
x = 97,462.05/354.48 - Step 6: Final answer
x = 274.94
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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.