Finding the Fourth Proportional to 322.69, 484.14 and 139.99
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Solution
The fourth proportional to 322.69, 484.14 and 139.99 is: 210.03
Step by Step Solution
- Step 1: Write the proportion equation
322.69 : 484.14 = 139.99 : x - Step 2: Convert to fraction form
322.69/484.14 = 139.99/x - Step 3: Cross multiply
322.69x = 484.14 × 139.99 - Step 4: Simplify right side
322.69x = 67,772.34 - Step 5: Solve for x
x = 67,772.34/322.69 - Step 6: Final answer
x = 210.03
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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.