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Finding the Fourth Proportional to 174.07, 260.98 and 82.79

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Solution

The fourth proportional to 174.07, 260.98 and 82.79 is: 124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.07 : 260.98 = 82.79 : x
  2. Step 2: Convert to fraction form
    174.07/260.98 = 82.79/x
  3. Step 3: Cross multiply
    174.07x = 260.98 × 82.79
  4. Step 4: Simplify right side
    174.07x = 21,606.23
  5. Step 5: Solve for x
    x = 21,606.23/174.07
  6. Step 6: Final answer
    x = 124.13

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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.