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Finding the Fourth Proportional to 629.27, 860.91 and 626.53

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Solution

The fourth proportional to 629.27, 860.91 and 626.53 is: 857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.27 : 860.91 = 626.53 : x
  2. Step 2: Convert to fraction form
    629.27/860.91 = 626.53/x
  3. Step 3: Cross multiply
    629.27x = 860.91 × 626.53
  4. Step 4: Simplify right side
    629.27x = 539,382.81
  5. Step 5: Solve for x
    x = 539,382.81/629.27
  6. Step 6: Final answer
    x = 857.16

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.