Finding the Fourth Proportional to 349.71, 524.21 and 143.99
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Solution
The fourth proportional to 349.71, 524.21 and 143.99 is: 215.84
Step by Step Solution
- Step 1: Write the proportion equation
349.71 : 524.21 = 143.99 : x - Step 2: Convert to fraction form
349.71/524.21 = 143.99/x - Step 3: Cross multiply
349.71x = 524.21 × 143.99 - Step 4: Simplify right side
349.71x = 75,482.67 - Step 5: Solve for x
x = 75,482.67/349.71 - Step 6: Final answer
x = 215.84
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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.