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Finding the Fourth Proportional to 681.81, 940.17 and 626.32

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Solution

The fourth proportional to 681.81, 940.17 and 626.32 is: 863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.81 : 940.17 = 626.32 : x
  2. Step 2: Convert to fraction form
    681.81/940.17 = 626.32/x
  3. Step 3: Cross multiply
    681.81x = 940.17 × 626.32
  4. Step 4: Simplify right side
    681.81x = 588,847.27
  5. Step 5: Solve for x
    x = 588,847.27/681.81
  6. Step 6: Final answer
    x = 863.65

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1.5x scale

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.