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Finding the Fourth Proportional to 325.68, 449.12 and 207.62

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Solution

The fourth proportional to 325.68, 449.12 and 207.62 is: 286.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.68 : 449.12 = 207.62 : x
  2. Step 2: Convert to fraction form
    325.68/449.12 = 207.62/x
  3. Step 3: Cross multiply
    325.68x = 449.12 × 207.62
  4. Step 4: Simplify right side
    325.68x = 93,246.29
  5. Step 5: Solve for x
    x = 93,246.29/325.68
  6. Step 6: Final answer
    x = 286.31

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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.