Finding the Fourth Proportional to 259.36, 388.99 and 135.96
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Solution
The fourth proportional to 259.36, 388.99 and 135.96 is: 203.91
Step by Step Solution
- Step 1: Write the proportion equation
259.36 : 388.99 = 135.96 : x - Step 2: Convert to fraction form
259.36/388.99 = 135.96/x - Step 3: Cross multiply
259.36x = 388.99 × 135.96 - Step 4: Simplify right side
259.36x = 52,887.08 - Step 5: Solve for x
x = 52,887.08/259.36 - Step 6: Final answer
x = 203.91
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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.