Finding the Fourth Proportional to 403.20, 556.68 and 361.62
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Solution
The fourth proportional to 403.20, 556.68 and 361.62 is: 499.27
Step by Step Solution
- Step 1: Write the proportion equation
403.20 : 556.68 = 361.62 : x - Step 2: Convert to fraction form
403.20/556.68 = 361.62/x - Step 3: Cross multiply
403.20x = 556.68 × 361.62 - Step 4: Simplify right side
403.20x = 201,306.62 - Step 5: Solve for x
x = 201,306.62/403.20 - Step 6: Final answer
x = 499.27
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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.