Finding the Fourth Proportional to 1,776.24, 2,664 and 477.84
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Solution
The fourth proportional to 1,776.24, 2,664 and 477.84 is: 716.66
Step by Step Solution
- Step 1: Write the proportion equation
1,776.24 : 2,664 = 477.84 : x - Step 2: Convert to fraction form
1,776.24/2,664 = 477.84/x - Step 3: Cross multiply
1,776.24x = 2,664 × 477.84 - Step 4: Simplify right side
1,776.24x = 1,272,965.76 - Step 5: Solve for x
x = 1,272,965.76/1,776.24 - Step 6: Final answer
x = 716.66
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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.