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Finding the Fourth Proportional to 260.95, 359.88 and 172.48

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Solution

The fourth proportional to 260.95, 359.88 and 172.48 is: 237.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.95 : 359.88 = 172.48 : x
  2. Step 2: Convert to fraction form
    260.95/359.88 = 172.48/x
  3. Step 3: Cross multiply
    260.95x = 359.88 × 172.48
  4. Step 4: Simplify right side
    260.95x = 62,072.10
  5. Step 5: Solve for x
    x = 62,072.10/260.95
  6. Step 6: Final answer
    x = 237.87

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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.