Finding the Fourth Proportional to 297.19, 445.75 and 91.76
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Solution
The fourth proportional to 297.19, 445.75 and 91.76 is: 137.63
Step by Step Solution
- Step 1: Write the proportion equation
297.19 : 445.75 = 91.76 : x - Step 2: Convert to fraction form
297.19/445.75 = 91.76/x - Step 3: Cross multiply
297.19x = 445.75 × 91.76 - Step 4: Simplify right side
297.19x = 40,903.13 - Step 5: Solve for x
x = 40,903.13/297.19 - Step 6: Final answer
x = 137.63
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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.