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Finding the Fourth Proportional to 251.54, 347.03 and 158.26

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Solution

The fourth proportional to 251.54, 347.03 and 158.26 is: 218.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.54 : 347.03 = 158.26 : x
  2. Step 2: Convert to fraction form
    251.54/347.03 = 158.26/x
  3. Step 3: Cross multiply
    251.54x = 347.03 × 158.26
  4. Step 4: Simplify right side
    251.54x = 54,919.31
  5. Step 5: Solve for x
    x = 54,919.31/251.54
  6. Step 6: Final answer
    x = 218.33

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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.