Finding the Fourth Proportional to 335.19, 502.74 and 91.70
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Solution
The fourth proportional to 335.19, 502.74 and 91.70 is: 137.53
Step by Step Solution
- Step 1: Write the proportion equation
335.19 : 502.74 = 91.70 : x - Step 2: Convert to fraction form
335.19/502.74 = 91.70/x - Step 3: Cross multiply
335.19x = 502.74 × 91.70 - Step 4: Simplify right side
335.19x = 46,098.74 - Step 5: Solve for x
x = 46,098.74/335.19 - Step 6: Final answer
x = 137.53
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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.