Finding the Fourth Proportional to 276.70, 412.99 and 272.15
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Solution
The fourth proportional to 276.70, 412.99 and 272.15 is: 406.20
Step by Step Solution
- Step 1: Write the proportion equation
276.70 : 412.99 = 272.15 : x - Step 2: Convert to fraction form
276.70/412.99 = 272.15/x - Step 3: Cross multiply
276.70x = 412.99 × 272.15 - Step 4: Simplify right side
276.70x = 112,395.23 - Step 5: Solve for x
x = 112,395.23/276.70 - Step 6: Final answer
x = 406.20
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.