Finding the Fourth Proportional to 317.84, 476.80 and 135.26
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Solution
The fourth proportional to 317.84, 476.80 and 135.26 is: 202.91
Step by Step Solution
- Step 1: Write the proportion equation
317.84 : 476.80 = 135.26 : x - Step 2: Convert to fraction form
317.84/476.80 = 135.26/x - Step 3: Cross multiply
317.84x = 476.80 × 135.26 - Step 4: Simplify right side
317.84x = 64,491.97 - Step 5: Solve for x
x = 64,491.97/317.84 - Step 6: Final answer
x = 202.91
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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.