Finding the Fourth Proportional to 303.44, 455.08 and 87
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Solution
The fourth proportional to 303.44, 455.08 and 87 is: 130.48
Step by Step Solution
- Step 1: Write the proportion equation
303.44 : 455.08 = 87 : x - Step 2: Convert to fraction form
303.44/455.08 = 87/x - Step 3: Cross multiply
303.44x = 455.08 × 87 - Step 4: Simplify right side
303.44x = 39,591.96 - Step 5: Solve for x
x = 39,591.96/303.44 - Step 6: Final answer
x = 130.48
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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.