Finding the Fourth Proportional to 272.79, 409.86 and 261.99
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Solution
The fourth proportional to 272.79, 409.86 and 261.99 is: 393.63
Step by Step Solution
- Step 1: Write the proportion equation
272.79 : 409.86 = 261.99 : x - Step 2: Convert to fraction form
272.79/409.86 = 261.99/x - Step 3: Cross multiply
272.79x = 409.86 × 261.99 - Step 4: Simplify right side
272.79x = 107,379.22 - Step 5: Solve for x
x = 107,379.22/272.79 - Step 6: Final answer
x = 393.63
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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.