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Finding the Fourth Proportional to 258.93, 355.01 and 254.32

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Solution

The fourth proportional to 258.93, 355.01 and 254.32 is: 348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.93 : 355.01 = 254.32 : x
  2. Step 2: Convert to fraction form
    258.93/355.01 = 254.32/x
  3. Step 3: Cross multiply
    258.93x = 355.01 × 254.32
  4. Step 4: Simplify right side
    258.93x = 90,283.98
  5. Step 5: Solve for x
    x = 90,283.98/258.93
  6. Step 6: Final answer
    x = 348.68

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.