Finding the Fourth Proportional to 203.13, 304.55 and 87.63
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Solution
The fourth proportional to 203.13, 304.55 and 87.63 is: 131.38
Step by Step Solution
- Step 1: Write the proportion equation
203.13 : 304.55 = 87.63 : x - Step 2: Convert to fraction form
203.13/304.55 = 87.63/x - Step 3: Cross multiply
203.13x = 304.55 × 87.63 - Step 4: Simplify right side
203.13x = 26,688.05 - Step 5: Solve for x
x = 26,688.05/203.13 - Step 6: Final answer
x = 131.38
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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.