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Finding the Fourth Proportional to 1,525.89, 2,288.73 and 636.21

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Solution

The fourth proportional to 1,525.89, 2,288.73 and 636.21 is: 954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.89 : 2,288.73 = 636.21 : x
  2. Step 2: Convert to fraction form
    1,525.89/2,288.73 = 636.21/x
  3. Step 3: Cross multiply
    1,525.89x = 2,288.73 × 636.21
  4. Step 4: Simplify right side
    1,525.89x = 1,456,112.91
  5. Step 5: Solve for x
    x = 1,456,112.91/1,525.89
  6. Step 6: Final answer
    x = 954.27

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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.