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Finding the Fourth Proportional to 325.53, 449.20 and 185.63

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Solution

The fourth proportional to 325.53, 449.20 and 185.63 is: 256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.53 : 449.20 = 185.63 : x
  2. Step 2: Convert to fraction form
    325.53/449.20 = 185.63/x
  3. Step 3: Cross multiply
    325.53x = 449.20 × 185.63
  4. Step 4: Simplify right side
    325.53x = 83,385.65
  5. Step 5: Solve for x
    x = 83,385.65/325.53
  6. Step 6: Final answer
    x = 256.15

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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.