Finding the Fourth Proportional to 669.70, 924.21 and 374.96
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Solution
The fourth proportional to 669.70, 924.21 and 374.96 is: 517.46
Step by Step Solution
- Step 1: Write the proportion equation
669.70 : 924.21 = 374.96 : x - Step 2: Convert to fraction form
669.70/924.21 = 374.96/x - Step 3: Cross multiply
669.70x = 924.21 × 374.96 - Step 4: Simplify right side
669.70x = 346,541.78 - Step 5: Solve for x
x = 346,541.78/669.70 - Step 6: Final answer
x = 517.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.