Finding the Fourth Proportional to 215.64, 323.44 and 71.34
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Solution
The fourth proportional to 215.64, 323.44 and 71.34 is: 107.00
Step by Step Solution
- Step 1: Write the proportion equation
215.64 : 323.44 = 71.34 : x - Step 2: Convert to fraction form
215.64/323.44 = 71.34/x - Step 3: Cross multiply
215.64x = 323.44 × 71.34 - Step 4: Simplify right side
215.64x = 23,074.21 - Step 5: Solve for x
x = 23,074.21/215.64 - Step 6: Final answer
x = 107.00
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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.