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Finding the Fourth Proportional to 657.48, 979.50 and 629.54

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Solution

The fourth proportional to 657.48, 979.50 and 629.54 is: 937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.48 : 979.50 = 629.54 : x
  2. Step 2: Convert to fraction form
    657.48/979.50 = 629.54/x
  3. Step 3: Cross multiply
    657.48x = 979.50 × 629.54
  4. Step 4: Simplify right side
    657.48x = 616,634.43
  5. Step 5: Solve for x
    x = 616,634.43/657.48
  6. Step 6: Final answer
    x = 937.88

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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.