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Finding the Fourth Proportional to 251.91, 347.58 and 164.61

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Solution

The fourth proportional to 251.91, 347.58 and 164.61 is: 227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.91 : 347.58 = 164.61 : x
  2. Step 2: Convert to fraction form
    251.91/347.58 = 164.61/x
  3. Step 3: Cross multiply
    251.91x = 347.58 × 164.61
  4. Step 4: Simplify right side
    251.91x = 57,215.14
  5. Step 5: Solve for x
    x = 57,215.14/251.91
  6. Step 6: Final answer
    x = 227.13

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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.