Finding the Fourth Proportional to 274.08, 378.26 and 156.08
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Solution
The fourth proportional to 274.08, 378.26 and 156.08 is: 215.41
Step by Step Solution
- Step 1: Write the proportion equation
274.08 : 378.26 = 156.08 : x - Step 2: Convert to fraction form
274.08/378.26 = 156.08/x - Step 3: Cross multiply
274.08x = 378.26 × 156.08 - Step 4: Simplify right side
274.08x = 59,038.15 - Step 5: Solve for x
x = 59,038.15/274.08 - Step 6: Final answer
x = 215.41
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.