Finding the Fourth Proportional to 1,258, 1,886.38 and 435.99
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Solution
The fourth proportional to 1,258, 1,886.38 and 435.99 is: 653.77
Step by Step Solution
- Step 1: Write the proportion equation
1,258 : 1,886.38 = 435.99 : x - Step 2: Convert to fraction form
1,258/1,886.38 = 435.99/x - Step 3: Cross multiply
1,258x = 1,886.38 × 435.99 - Step 4: Simplify right side
1,258x = 822,442.82 - Step 5: Solve for x
x = 822,442.82/1,258 - Step 6: Final answer
x = 653.77
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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.