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Finding the Fourth Proportional to 629.92, 867.47 and 540.68

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Solution

The fourth proportional to 629.92, 867.47 and 540.68 is: 744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.92 : 867.47 = 540.68 : x
  2. Step 2: Convert to fraction form
    629.92/867.47 = 540.68/x
  3. Step 3: Cross multiply
    629.92x = 867.47 × 540.68
  4. Step 4: Simplify right side
    629.92x = 469,020.98
  5. Step 5: Solve for x
    x = 469,020.98/629.92
  6. Step 6: Final answer
    x = 744.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.