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Finding the Fourth Proportional to 322.53, 446.96 and 316.37

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Solution

The fourth proportional to 322.53, 446.96 and 316.37 is: 438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.53 : 446.96 = 316.37 : x
  2. Step 2: Convert to fraction form
    322.53/446.96 = 316.37/x
  3. Step 3: Cross multiply
    322.53x = 446.96 × 316.37
  4. Step 4: Simplify right side
    322.53x = 141,406.64
  5. Step 5: Solve for x
    x = 141,406.64/322.53
  6. Step 6: Final answer
    x = 438.43

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.