Finding the Fourth Proportional to 489.19, 675.14 and 282.19
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Solution
The fourth proportional to 489.19, 675.14 and 282.19 is: 389.45
Step by Step Solution
- Step 1: Write the proportion equation
489.19 : 675.14 = 282.19 : x - Step 2: Convert to fraction form
489.19/675.14 = 282.19/x - Step 3: Cross multiply
489.19x = 675.14 × 282.19 - Step 4: Simplify right side
489.19x = 190,515.72 - Step 5: Solve for x
x = 190,515.72/489.19 - Step 6: Final answer
x = 389.45
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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.