Finding the Fourth Proportional to 307.59, 461.35 and 91.18
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Solution
The fourth proportional to 307.59, 461.35 and 91.18 is: 136.75
Step by Step Solution
- Step 1: Write the proportion equation
307.59 : 461.35 = 91.18 : x - Step 2: Convert to fraction form
307.59/461.35 = 91.18/x - Step 3: Cross multiply
307.59x = 461.35 × 91.18 - Step 4: Simplify right side
307.59x = 42,063.13 - Step 5: Solve for x
x = 42,063.13/307.59 - Step 6: Final answer
x = 136.75
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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.