Finding the Fourth Proportional to 349.70, 524.79 and 258.65
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Solution
The fourth proportional to 349.70, 524.79 and 258.65 is: 388.15
Step by Step Solution
- Step 1: Write the proportion equation
349.70 : 524.79 = 258.65 : x - Step 2: Convert to fraction form
349.70/524.79 = 258.65/x - Step 3: Cross multiply
349.70x = 524.79 × 258.65 - Step 4: Simplify right side
349.70x = 135,734.31 - Step 5: Solve for x
x = 135,734.31/349.70 - Step 6: Final answer
x = 388.15
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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.