Finding the Fourth Proportional to 307.60, 461.26 and 91.14
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Solution
The fourth proportional to 307.60, 461.26 and 91.14 is: 136.67
Step by Step Solution
- Step 1: Write the proportion equation
307.60 : 461.26 = 91.14 : x - Step 2: Convert to fraction form
307.60/461.26 = 91.14/x - Step 3: Cross multiply
307.60x = 461.26 × 91.14 - Step 4: Simplify right side
307.60x = 42,039.24 - Step 5: Solve for x
x = 42,039.24/307.60 - Step 6: Final answer
x = 136.67
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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.