Finding the Fourth Proportional to 381.21, 570.99 and 236.76
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Solution
The fourth proportional to 381.21, 570.99 and 236.76 is: 354.63
Step by Step Solution
- Step 1: Write the proportion equation
381.21 : 570.99 = 236.76 : x - Step 2: Convert to fraction form
381.21/570.99 = 236.76/x - Step 3: Cross multiply
381.21x = 570.99 × 236.76 - Step 4: Simplify right side
381.21x = 135,187.59 - Step 5: Solve for x
x = 135,187.59/381.21 - Step 6: Final answer
x = 354.63
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.