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Finding the Fourth Proportional to 629.13, 938.49 and 536.79

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Solution

The fourth proportional to 629.13, 938.49 and 536.79 is: 800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.13 : 938.49 = 536.79 : x
  2. Step 2: Convert to fraction form
    629.13/938.49 = 536.79/x
  3. Step 3: Cross multiply
    629.13x = 938.49 × 536.79
  4. Step 4: Simplify right side
    629.13x = 503,772.05
  5. Step 5: Solve for x
    x = 503,772.05/629.13
  6. Step 6: Final answer
    x = 800.74

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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.