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Finding the Fourth Proportional to 1,650.75, 2,474.84 and 869.73

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Solution

The fourth proportional to 1,650.75, 2,474.84 and 869.73 is: 1,303.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.75 : 2,474.84 = 869.73 : x
  2. Step 2: Convert to fraction form
    1,650.75/2,474.84 = 869.73/x
  3. Step 3: Cross multiply
    1,650.75x = 2,474.84 × 869.73
  4. Step 4: Simplify right side
    1,650.75x = 2,152,438.24
  5. Step 5: Solve for x
    x = 2,152,438.24/1,650.75
  6. Step 6: Final answer
    x = 1,303.92

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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.