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Finding the Fourth Proportional to 260.69, 391.15 and 183.47

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Solution

The fourth proportional to 260.69, 391.15 and 183.47 is: 275.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.69 : 391.15 = 183.47 : x
  2. Step 2: Convert to fraction form
    260.69/391.15 = 183.47/x
  3. Step 3: Cross multiply
    260.69x = 391.15 × 183.47
  4. Step 4: Simplify right side
    260.69x = 71,763.08
  5. Step 5: Solve for x
    x = 71,763.08/260.69
  6. Step 6: Final answer
    x = 275.28

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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.