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Finding the Fourth Proportional to 684.48, 943.04 and 629.36

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Solution

The fourth proportional to 684.48, 943.04 and 629.36 is: 867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.48 : 943.04 = 629.36 : x
  2. Step 2: Convert to fraction form
    684.48/943.04 = 629.36/x
  3. Step 3: Cross multiply
    684.48x = 943.04 × 629.36
  4. Step 4: Simplify right side
    684.48x = 593,511.65
  5. Step 5: Solve for x
    x = 593,511.65/684.48
  6. Step 6: Final answer
    x = 867.10

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Double scale
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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.