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Finding the Fourth Proportional to 260.54, 391.17 and 173.93

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Solution

The fourth proportional to 260.54, 391.17 and 173.93 is: 261.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.54 : 391.17 = 173.93 : x
  2. Step 2: Convert to fraction form
    260.54/391.17 = 173.93/x
  3. Step 3: Cross multiply
    260.54x = 391.17 × 173.93
  4. Step 4: Simplify right side
    260.54x = 68,036.20
  5. Step 5: Solve for x
    x = 68,036.20/260.54
  6. Step 6: Final answer
    x = 261.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.