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Finding the Fourth Proportional to 863.48, 1,293.94 and 446.07

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Solution

The fourth proportional to 863.48, 1,293.94 and 446.07 is: 668.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.48 : 1,293.94 = 446.07 : x
  2. Step 2: Convert to fraction form
    863.48/1,293.94 = 446.07/x
  3. Step 3: Cross multiply
    863.48x = 1,293.94 × 446.07
  4. Step 4: Simplify right side
    863.48x = 577,186.70
  5. Step 5: Solve for x
    x = 577,186.70/863.48
  6. Step 6: Final answer
    x = 668.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.