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Finding the Fourth Proportional to 1,487.37, 2,229.47 and 664.52

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Solution

The fourth proportional to 1,487.37, 2,229.47 and 664.52 is: 996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.37 : 2,229.47 = 664.52 : x
  2. Step 2: Convert to fraction form
    1,487.37/2,229.47 = 664.52/x
  3. Step 3: Cross multiply
    1,487.37x = 2,229.47 × 664.52
  4. Step 4: Simplify right side
    1,487.37x = 1,481,515.43
  5. Step 5: Solve for x
    x = 1,481,515.43/1,487.37
  6. Step 6: Final answer
    x = 996.06

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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.