Finding the Fourth Proportional to 317.68, 476.73 and 135.08
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Solution
The fourth proportional to 317.68, 476.73 and 135.08 is: 202.70
Step by Step Solution
- Step 1: Write the proportion equation
317.68 : 476.73 = 135.08 : x - Step 2: Convert to fraction form
317.68/476.73 = 135.08/x - Step 3: Cross multiply
317.68x = 476.73 × 135.08 - Step 4: Simplify right side
317.68x = 64,394.69 - Step 5: Solve for x
x = 64,394.69/317.68 - Step 6: Final answer
x = 202.70
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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.