Finding the Fourth Proportional to 259.08, 387.41 and 218.99
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Solution
The fourth proportional to 259.08, 387.41 and 218.99 is: 327.45
Step by Step Solution
- Step 1: Write the proportion equation
259.08 : 387.41 = 218.99 : x - Step 2: Convert to fraction form
259.08/387.41 = 218.99/x - Step 3: Cross multiply
259.08x = 387.41 × 218.99 - Step 4: Simplify right side
259.08x = 84,835.88 - Step 5: Solve for x
x = 84,835.88/259.08 - Step 6: Final answer
x = 327.45
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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.