Finding the Fourth Proportional to 919, 1,267.68 and 669.99
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Solution
The fourth proportional to 919, 1,267.68 and 669.99 is: 924.19
Step by Step Solution
- Step 1: Write the proportion equation
919 : 1,267.68 = 669.99 : x - Step 2: Convert to fraction form
919/1,267.68 = 669.99/x - Step 3: Cross multiply
919x = 1,267.68 × 669.99 - Step 4: Simplify right side
919x = 849,332.92 - Step 5: Solve for x
x = 849,332.92/919 - Step 6: Final answer
x = 924.19
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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.