Finding the Fourth Proportional to 316.60, 474.68 and 133.74
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Solution
The fourth proportional to 316.60, 474.68 and 133.74 is: 200.52
Step by Step Solution
- Step 1: Write the proportion equation
316.60 : 474.68 = 133.74 : x - Step 2: Convert to fraction form
316.60/474.68 = 133.74/x - Step 3: Cross multiply
316.60x = 474.68 × 133.74 - Step 4: Simplify right side
316.60x = 63,483.70 - Step 5: Solve for x
x = 63,483.70/316.60 - Step 6: Final answer
x = 200.52
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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.