Finding the Fourth Proportional to 297.24, 445.93 and 91.80
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Solution
The fourth proportional to 297.24, 445.93 and 91.80 is: 137.72
Step by Step Solution
- Step 1: Write the proportion equation
297.24 : 445.93 = 91.80 : x - Step 2: Convert to fraction form
297.24/445.93 = 91.80/x - Step 3: Cross multiply
297.24x = 445.93 × 91.80 - Step 4: Simplify right side
297.24x = 40,936.14 - Step 5: Solve for x
x = 40,936.14/297.24 - Step 6: Final answer
x = 137.72
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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.