Finding the Fourth Proportional to 303.84, 455.28 and 207.60
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Solution
The fourth proportional to 303.84, 455.28 and 207.60 is: 311.07
Step by Step Solution
- Step 1: Write the proportion equation
303.84 : 455.28 = 207.60 : x - Step 2: Convert to fraction form
303.84/455.28 = 207.60/x - Step 3: Cross multiply
303.84x = 455.28 × 207.60 - Step 4: Simplify right side
303.84x = 94,516.13 - Step 5: Solve for x
x = 94,516.13/303.84 - Step 6: Final answer
x = 311.07
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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.