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Finding the Fourth Proportional to 258.09, 356.27 and 180.51

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Solution

The fourth proportional to 258.09, 356.27 and 180.51 is: 249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.09 : 356.27 = 180.51 : x
  2. Step 2: Convert to fraction form
    258.09/356.27 = 180.51/x
  3. Step 3: Cross multiply
    258.09x = 356.27 × 180.51
  4. Step 4: Simplify right side
    258.09x = 64,309.40
  5. Step 5: Solve for x
    x = 64,309.40/258.09
  6. Step 6: Final answer
    x = 249.17

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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.