Finding the Fourth Proportional to 397.44, 549.99 and 394.20
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Solution
The fourth proportional to 397.44, 549.99 and 394.20 is: 545.51
Step by Step Solution
- Step 1: Write the proportion equation
397.44 : 549.99 = 394.20 : x - Step 2: Convert to fraction form
397.44/549.99 = 394.20/x - Step 3: Cross multiply
397.44x = 549.99 × 394.20 - Step 4: Simplify right side
397.44x = 216,806.06 - Step 5: Solve for x
x = 216,806.06/397.44 - Step 6: Final answer
x = 545.51
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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.