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Finding the Fourth Proportional to 1,763.86, 2,645.80 and 531.28

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Solution

The fourth proportional to 1,763.86, 2,645.80 and 531.28 is: 796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.86 : 2,645.80 = 531.28 : x
  2. Step 2: Convert to fraction form
    1,763.86/2,645.80 = 531.28/x
  3. Step 3: Cross multiply
    1,763.86x = 2,645.80 × 531.28
  4. Step 4: Simplify right side
    1,763.86x = 1,405,660.62
  5. Step 5: Solve for x
    x = 1,405,660.62/1,763.86
  6. Step 6: Final answer
    x = 796.92

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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.