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Finding the Fourth Proportional to 251.69, 347.26 and 164.45

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Solution

The fourth proportional to 251.69, 347.26 and 164.45 is: 226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.69 : 347.26 = 164.45 : x
  2. Step 2: Convert to fraction form
    251.69/347.26 = 164.45/x
  3. Step 3: Cross multiply
    251.69x = 347.26 × 164.45
  4. Step 4: Simplify right side
    251.69x = 57,106.91
  5. Step 5: Solve for x
    x = 57,106.91/251.69
  6. Step 6: Final answer
    x = 226.89

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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.