Finding the Fourth Proportional to 347.18, 478.97 and 199.79
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Solution
The fourth proportional to 347.18, 478.97 and 199.79 is: 275.62
Step by Step Solution
- Step 1: Write the proportion equation
347.18 : 478.97 = 199.79 : x - Step 2: Convert to fraction form
347.18/478.97 = 199.79/x - Step 3: Cross multiply
347.18x = 478.97 × 199.79 - Step 4: Simplify right side
347.18x = 95,690.02 - Step 5: Solve for x
x = 95,690.02/347.18 - Step 6: Final answer
x = 275.62
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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.