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Finding the Fourth Proportional to 1,494.59, 2,062.67 and 831.67

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Solution

The fourth proportional to 1,494.59, 2,062.67 and 831.67 is: 1,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.59 : 2,062.67 = 831.67 : x
  2. Step 2: Convert to fraction form
    1,494.59/2,062.67 = 831.67/x
  3. Step 3: Cross multiply
    1,494.59x = 2,062.67 × 831.67
  4. Step 4: Simplify right side
    1,494.59x = 1,715,451.44
  5. Step 5: Solve for x
    x = 1,715,451.44/1,494.59
  6. Step 6: Final answer
    x = 1,147.78

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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.