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Finding the Fourth Proportional to 260.36, 358.24 and 254.21

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Solution

The fourth proportional to 260.36, 358.24 and 254.21 is: 349.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.36 : 358.24 = 254.21 : x
  2. Step 2: Convert to fraction form
    260.36/358.24 = 254.21/x
  3. Step 3: Cross multiply
    260.36x = 358.24 × 254.21
  4. Step 4: Simplify right side
    260.36x = 91,068.19
  5. Step 5: Solve for x
    x = 91,068.19/260.36
  6. Step 6: Final answer
    x = 349.78

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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.