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Finding the Fourth Proportional to 323.93, 446.79 and 313.22

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Solution

The fourth proportional to 323.93, 446.79 and 313.22 is: 432.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.93 : 446.79 = 313.22 : x
  2. Step 2: Convert to fraction form
    323.93/446.79 = 313.22/x
  3. Step 3: Cross multiply
    323.93x = 446.79 × 313.22
  4. Step 4: Simplify right side
    323.93x = 139,945.86
  5. Step 5: Solve for x
    x = 139,945.86/323.93
  6. Step 6: Final answer
    x = 432.02

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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.