Finding the Fourth Proportional to 203.23, 304.93 and 87.70
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Solution
The fourth proportional to 203.23, 304.93 and 87.70 is: 131.59
Step by Step Solution
- Step 1: Write the proportion equation
203.23 : 304.93 = 87.70 : x - Step 2: Convert to fraction form
203.23/304.93 = 87.70/x - Step 3: Cross multiply
203.23x = 304.93 × 87.70 - Step 4: Simplify right side
203.23x = 26,742.36 - Step 5: Solve for x
x = 26,742.36/203.23 - Step 6: Final answer
x = 131.59
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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.