Finding the Fourth Proportional to 351.93, 528.29 and 178.79
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Solution
The fourth proportional to 351.93, 528.29 and 178.79 is: 268.39
Step by Step Solution
- Step 1: Write the proportion equation
351.93 : 528.29 = 178.79 : x - Step 2: Convert to fraction form
351.93/528.29 = 178.79/x - Step 3: Cross multiply
351.93x = 528.29 × 178.79 - Step 4: Simplify right side
351.93x = 94,453.08 - Step 5: Solve for x
x = 94,453.08/351.93 - Step 6: Final answer
x = 268.39
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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.