Finding the Fourth Proportional to 1,134.60, 1,565.55 and 686.31
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Solution
The fourth proportional to 1,134.60, 1,565.55 and 686.31 is: 946.99
Step by Step Solution
- Step 1: Write the proportion equation
1,134.60 : 1,565.55 = 686.31 : x - Step 2: Convert to fraction form
1,134.60/1,565.55 = 686.31/x - Step 3: Cross multiply
1,134.60x = 1,565.55 × 686.31 - Step 4: Simplify right side
1,134.60x = 1,074,452.62 - Step 5: Solve for x
x = 1,074,452.62/1,134.60 - Step 6: Final answer
x = 946.99
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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.