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Finding the Fourth Proportional to 254.54, 351.44 and 156.43

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Solution

The fourth proportional to 254.54, 351.44 and 156.43 is: 215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.54 : 351.44 = 156.43 : x
  2. Step 2: Convert to fraction form
    254.54/351.44 = 156.43/x
  3. Step 3: Cross multiply
    254.54x = 351.44 × 156.43
  4. Step 4: Simplify right side
    254.54x = 54,976.00
  5. Step 5: Solve for x
    x = 54,976.00/254.54
  6. Step 6: Final answer
    x = 215.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.