Finding the Fourth Proportional to 307.44, 424.08 and 220.14
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Solution
The fourth proportional to 307.44, 424.08 and 220.14 is: 303.66
Step by Step Solution
- Step 1: Write the proportion equation
307.44 : 424.08 = 220.14 : x - Step 2: Convert to fraction form
307.44/424.08 = 220.14/x - Step 3: Cross multiply
307.44x = 424.08 × 220.14 - Step 4: Simplify right side
307.44x = 93,356.97 - Step 5: Solve for x
x = 93,356.97/307.44 - Step 6: Final answer
x = 303.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.