Finding the Fourth Proportional to 202.55, 303.86 and 86.99
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Solution
The fourth proportional to 202.55, 303.86 and 86.99 is: 130.51
Step by Step Solution
- Step 1: Write the proportion equation
202.55 : 303.86 = 86.99 : x - Step 2: Convert to fraction form
202.55/303.86 = 86.99/x - Step 3: Cross multiply
202.55x = 303.86 × 86.99 - Step 4: Simplify right side
202.55x = 26,433.76 - Step 5: Solve for x
x = 26,433.76/202.55 - Step 6: Final answer
x = 130.51
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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.