Finding the Fourth Proportional to 202.95, 304.40 and 81.18
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Solution
The fourth proportional to 202.95, 304.40 and 81.18 is: 121.76
Step by Step Solution
- Step 1: Write the proportion equation
202.95 : 304.40 = 81.18 : x - Step 2: Convert to fraction form
202.95/304.40 = 81.18/x - Step 3: Cross multiply
202.95x = 304.40 × 81.18 - Step 4: Simplify right side
202.95x = 24,711.19 - Step 5: Solve for x
x = 24,711.19/202.95 - Step 6: Final answer
x = 121.76
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.