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Finding the Fourth Proportional to 260.28, 358.83 and 186.47

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Solution

The fourth proportional to 260.28, 358.83 and 186.47 is: 257.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.28 : 358.83 = 186.47 : x
  2. Step 2: Convert to fraction form
    260.28/358.83 = 186.47/x
  3. Step 3: Cross multiply
    260.28x = 358.83 × 186.47
  4. Step 4: Simplify right side
    260.28x = 66,909.24
  5. Step 5: Solve for x
    x = 66,909.24/260.28
  6. Step 6: Final answer
    x = 257.07

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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.