Finding the Fourth Proportional to 1,355.97, 2,034 and 431.63
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Solution
The fourth proportional to 1,355.97, 2,034 and 431.63 is: 647.45
Step by Step Solution
- Step 1: Write the proportion equation
1,355.97 : 2,034 = 431.63 : x - Step 2: Convert to fraction form
1,355.97/2,034 = 431.63/x - Step 3: Cross multiply
1,355.97x = 2,034 × 431.63 - Step 4: Simplify right side
1,355.97x = 877,925.25 - Step 5: Solve for x
x = 877,925.25/1,355.97 - Step 6: Final answer
x = 647.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.