Finding the Fourth Proportional to 354.91, 489.77 and 199.66
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Solution
The fourth proportional to 354.91, 489.77 and 199.66 is: 275.53
Step by Step Solution
- Step 1: Write the proportion equation
354.91 : 489.77 = 199.66 : x - Step 2: Convert to fraction form
354.91/489.77 = 199.66/x - Step 3: Cross multiply
354.91x = 489.77 × 199.66 - Step 4: Simplify right side
354.91x = 97,787.48 - Step 5: Solve for x
x = 97,787.48/354.91 - Step 6: Final answer
x = 275.53
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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.