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Finding the Fourth Proportional to 325.37, 446.74 and 316.91

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Solution

The fourth proportional to 325.37, 446.74 and 316.91 is: 435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.37 : 446.74 = 316.91 : x
  2. Step 2: Convert to fraction form
    325.37/446.74 = 316.91/x
  3. Step 3: Cross multiply
    325.37x = 446.74 × 316.91
  4. Step 4: Simplify right side
    325.37x = 141,576.70
  5. Step 5: Solve for x
    x = 141,576.70/325.37
  6. Step 6: Final answer
    x = 435.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.