Finding the Fourth Proportional to 208.68, 312.94 and 93.01
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Solution
The fourth proportional to 208.68, 312.94 and 93.01 is: 139.48
Step by Step Solution
- Step 1: Write the proportion equation
208.68 : 312.94 = 93.01 : x - Step 2: Convert to fraction form
208.68/312.94 = 93.01/x - Step 3: Cross multiply
208.68x = 312.94 × 93.01 - Step 4: Simplify right side
208.68x = 29,106.08 - Step 5: Solve for x
x = 29,106.08/208.68 - Step 6: Final answer
x = 139.48
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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.