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Finding the Fourth Proportional to 258.06, 356.46 and 203.49

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Solution

The fourth proportional to 258.06, 356.46 and 203.49 is: 281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.06 : 356.46 = 203.49 : x
  2. Step 2: Convert to fraction form
    258.06/356.46 = 203.49/x
  3. Step 3: Cross multiply
    258.06x = 356.46 × 203.49
  4. Step 4: Simplify right side
    258.06x = 72,536.05
  5. Step 5: Solve for x
    x = 72,536.05/258.06
  6. Step 6: Final answer
    x = 281.08

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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.