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Finding the Fourth Proportional to 352.30, 485.42 and 269.26

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Solution

The fourth proportional to 352.30, 485.42 and 269.26 is: 371.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.30 : 485.42 = 269.26 : x
  2. Step 2: Convert to fraction form
    352.30/485.42 = 269.26/x
  3. Step 3: Cross multiply
    352.30x = 485.42 × 269.26
  4. Step 4: Simplify right side
    352.30x = 130,704.19
  5. Step 5: Solve for x
    x = 130,704.19/352.30
  6. Step 6: Final answer
    x = 371.00

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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.