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Finding the Fourth Proportional to 260.10, 358.77 and 189.09

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Solution

The fourth proportional to 260.10, 358.77 and 189.09 is: 260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.10 : 358.77 = 189.09 : x
  2. Step 2: Convert to fraction form
    260.10/358.77 = 189.09/x
  3. Step 3: Cross multiply
    260.10x = 358.77 × 189.09
  4. Step 4: Simplify right side
    260.10x = 67,839.82
  5. Step 5: Solve for x
    x = 67,839.82/260.10
  6. Step 6: Final answer
    x = 260.82

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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.