Finding the Fourth Proportional to 202.17, 302.95 and 80.40
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Solution
The fourth proportional to 202.17, 302.95 and 80.40 is: 120.48
Step by Step Solution
- Step 1: Write the proportion equation
202.17 : 302.95 = 80.40 : x - Step 2: Convert to fraction form
202.17/302.95 = 80.40/x - Step 3: Cross multiply
202.17x = 302.95 × 80.40 - Step 4: Simplify right side
202.17x = 24,357.18 - Step 5: Solve for x
x = 24,357.18/202.17 - Step 6: Final answer
x = 120.48
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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.