Finding the Fourth Proportional to 277.17, 415.80 and 84.75
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Solution
The fourth proportional to 277.17, 415.80 and 84.75 is: 127.14
Step by Step Solution
- Step 1: Write the proportion equation
277.17 : 415.80 = 84.75 : x - Step 2: Convert to fraction form
277.17/415.80 = 84.75/x - Step 3: Cross multiply
277.17x = 415.80 × 84.75 - Step 4: Simplify right side
277.17x = 35,239.05 - Step 5: Solve for x
x = 35,239.05/277.17 - Step 6: Final answer
x = 127.14
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.