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Finding the Fourth Proportional to 629.52, 938.64 and 619.44

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Solution

The fourth proportional to 629.52, 938.64 and 619.44 is: 923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.52 : 938.64 = 619.44 : x
  2. Step 2: Convert to fraction form
    629.52/938.64 = 619.44/x
  3. Step 3: Cross multiply
    629.52x = 938.64 × 619.44
  4. Step 4: Simplify right side
    629.52x = 581,431.16
  5. Step 5: Solve for x
    x = 581,431.16/629.52
  6. Step 6: Final answer
    x = 923.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.