Finding the Fourth Proportional to 317.79, 476.76 and 135.19
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Solution
The fourth proportional to 317.79, 476.76 and 135.19 is: 202.82
Step by Step Solution
- Step 1: Write the proportion equation
317.79 : 476.76 = 135.19 : x - Step 2: Convert to fraction form
317.79/476.76 = 135.19/x - Step 3: Cross multiply
317.79x = 476.76 × 135.19 - Step 4: Simplify right side
317.79x = 64,453.18 - Step 5: Solve for x
x = 64,453.18/317.79 - Step 6: Final answer
x = 202.82
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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.