Finding the Fourth Proportional to 381.24, 571.36 and 236.64
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Solution
The fourth proportional to 381.24, 571.36 and 236.64 is: 354.65
Step by Step Solution
- Step 1: Write the proportion equation
381.24 : 571.36 = 236.64 : x - Step 2: Convert to fraction form
381.24/571.36 = 236.64/x - Step 3: Cross multiply
381.24x = 571.36 × 236.64 - Step 4: Simplify right side
381.24x = 135,206.63 - Step 5: Solve for x
x = 135,206.63/381.24 - Step 6: Final answer
x = 354.65
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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.