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Finding the Fourth Proportional to 1,683.45, 2,525.67 and 862.28

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Solution

The fourth proportional to 1,683.45, 2,525.67 and 862.28 is: 1,293.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.45 : 2,525.67 = 862.28 : x
  2. Step 2: Convert to fraction form
    1,683.45/2,525.67 = 862.28/x
  3. Step 3: Cross multiply
    1,683.45x = 2,525.67 × 862.28
  4. Step 4: Simplify right side
    1,683.45x = 2,177,831.57
  5. Step 5: Solve for x
    x = 2,177,831.57/1,683.45
  6. Step 6: Final answer
    x = 1,293.67

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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.