Finding the Fourth Proportional to 399.13, 549.18 and 338.99
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Solution
The fourth proportional to 399.13, 549.18 and 338.99 is: 466.43
Step by Step Solution
- Step 1: Write the proportion equation
399.13 : 549.18 = 338.99 : x - Step 2: Convert to fraction form
399.13/549.18 = 338.99/x - Step 3: Cross multiply
399.13x = 549.18 × 338.99 - Step 4: Simplify right side
399.13x = 186,163.78 - Step 5: Solve for x
x = 186,163.78/399.13 - Step 6: Final answer
x = 466.43
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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.