Finding the Fourth Proportional to 202.61, 303.94 and 86.99
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Solution
The fourth proportional to 202.61, 303.94 and 86.99 is: 130.49
Step by Step Solution
- Step 1: Write the proportion equation
202.61 : 303.94 = 86.99 : x - Step 2: Convert to fraction form
202.61/303.94 = 86.99/x - Step 3: Cross multiply
202.61x = 303.94 × 86.99 - Step 4: Simplify right side
202.61x = 26,438.63 - Step 5: Solve for x
x = 26,438.63/202.61 - Step 6: Final answer
x = 130.49
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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.