Finding the Fourth Proportional to 276.97, 415.09 and 155.20
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Solution
The fourth proportional to 276.97, 415.09 and 155.20 is: 232.60
Step by Step Solution
- Step 1: Write the proportion equation
276.97 : 415.09 = 155.20 : x - Step 2: Convert to fraction form
276.97/415.09 = 155.20/x - Step 3: Cross multiply
276.97x = 415.09 × 155.20 - Step 4: Simplify right side
276.97x = 64,421.97 - Step 5: Solve for x
x = 64,421.97/276.97 - Step 6: Final answer
x = 232.60
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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.