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Finding the Fourth Proportional to 258.77, 357.12 and 148.27

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Solution

The fourth proportional to 258.77, 357.12 and 148.27 is: 204.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.77 : 357.12 = 148.27 : x
  2. Step 2: Convert to fraction form
    258.77/357.12 = 148.27/x
  3. Step 3: Cross multiply
    258.77x = 357.12 × 148.27
  4. Step 4: Simplify right side
    258.77x = 52,947.66
  5. Step 5: Solve for x
    x = 52,947.66/258.77
  6. Step 6: Final answer
    x = 204.61

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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.