Finding the Fourth Proportional to 1,052, 1,451.76 and 638.08
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Solution
The fourth proportional to 1,052, 1,451.76 and 638.08 is: 880.55
Step by Step Solution
- Step 1: Write the proportion equation
1,052 : 1,451.76 = 638.08 : x - Step 2: Convert to fraction form
1,052/1,451.76 = 638.08/x - Step 3: Cross multiply
1,052x = 1,451.76 × 638.08 - Step 4: Simplify right side
1,052x = 926,339.02 - Step 5: Solve for x
x = 926,339.02/1,052 - Step 6: Final answer
x = 880.55
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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.