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Finding the Fourth Proportional to 1,831.98, 2,748.20 and 792.25

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Solution

The fourth proportional to 1,831.98, 2,748.20 and 792.25 is: 1,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.98 : 2,748.20 = 792.25 : x
  2. Step 2: Convert to fraction form
    1,831.98/2,748.20 = 792.25/x
  3. Step 3: Cross multiply
    1,831.98x = 2,748.20 × 792.25
  4. Step 4: Simplify right side
    1,831.98x = 2,177,250.62
  5. Step 5: Solve for x
    x = 2,177,250.62/1,831.98
  6. Step 6: Final answer
    x = 1,188.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.