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Finding the Fourth Proportional to 260.72, 359.53 and 238.24

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Solution

The fourth proportional to 260.72, 359.53 and 238.24 is: 328.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.72 : 359.53 = 238.24 : x
  2. Step 2: Convert to fraction form
    260.72/359.53 = 238.24/x
  3. Step 3: Cross multiply
    260.72x = 359.53 × 238.24
  4. Step 4: Simplify right side
    260.72x = 85,654.43
  5. Step 5: Solve for x
    x = 85,654.43/260.72
  6. Step 6: Final answer
    x = 328.53

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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.