Finding the Fourth Proportional to 280.05, 386.56 and 233.96
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Solution
The fourth proportional to 280.05, 386.56 and 233.96 is: 322.94
Step by Step Solution
- Step 1: Write the proportion equation
280.05 : 386.56 = 233.96 : x - Step 2: Convert to fraction form
280.05/386.56 = 233.96/x - Step 3: Cross multiply
280.05x = 386.56 × 233.96 - Step 4: Simplify right side
280.05x = 90,437.94 - Step 5: Solve for x
x = 90,437.94/280.05 - Step 6: Final answer
x = 322.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.