Finding the Fourth Proportional to 324.99, 487.14 and 129.91
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Solution
The fourth proportional to 324.99, 487.14 and 129.91 is: 194.73
Step by Step Solution
- Step 1: Write the proportion equation
324.99 : 487.14 = 129.91 : x - Step 2: Convert to fraction form
324.99/487.14 = 129.91/x - Step 3: Cross multiply
324.99x = 487.14 × 129.91 - Step 4: Simplify right side
324.99x = 63,284.36 - Step 5: Solve for x
x = 63,284.36/324.99 - Step 6: Final answer
x = 194.73
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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.