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Finding the Fourth Proportional to 629.19, 936.77 and 620.08

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Solution

The fourth proportional to 629.19, 936.77 and 620.08 is: 923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.19 : 936.77 = 620.08 : x
  2. Step 2: Convert to fraction form
    629.19/936.77 = 620.08/x
  3. Step 3: Cross multiply
    629.19x = 936.77 × 620.08
  4. Step 4: Simplify right side
    629.19x = 580,866.90
  5. Step 5: Solve for x
    x = 580,866.90/629.19
  6. Step 6: Final answer
    x = 923.20

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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.