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Finding the Fourth Proportional to 352.53, 485.59 and 269.49

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Solution

The fourth proportional to 352.53, 485.59 and 269.49 is: 371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.53 : 485.59 = 269.49 : x
  2. Step 2: Convert to fraction form
    352.53/485.59 = 269.49/x
  3. Step 3: Cross multiply
    352.53x = 485.59 × 269.49
  4. Step 4: Simplify right side
    352.53x = 130,861.65
  5. Step 5: Solve for x
    x = 130,861.65/352.53
  6. Step 6: Final answer
    x = 371.21

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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.