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Finding the Fourth Proportional to 260.79, 359.76 and 172.24

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Solution

The fourth proportional to 260.79, 359.76 and 172.24 is: 237.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.79 : 359.76 = 172.24 : x
  2. Step 2: Convert to fraction form
    260.79/359.76 = 172.24/x
  3. Step 3: Cross multiply
    260.79x = 359.76 × 172.24
  4. Step 4: Simplify right side
    260.79x = 61,965.86
  5. Step 5: Solve for x
    x = 61,965.86/260.79
  6. Step 6: Final answer
    x = 237.61

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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.