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Finding the Fourth Proportional to 258.93, 356.86 and 206.27

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Solution

The fourth proportional to 258.93, 356.86 and 206.27 is: 284.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.93 : 356.86 = 206.27 : x
  2. Step 2: Convert to fraction form
    258.93/356.86 = 206.27/x
  3. Step 3: Cross multiply
    258.93x = 356.86 × 206.27
  4. Step 4: Simplify right side
    258.93x = 73,609.51
  5. Step 5: Solve for x
    x = 73,609.51/258.93
  6. Step 6: Final answer
    x = 284.28

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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.