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Finding the Fourth Proportional to 251.53, 347.23 and 168.69

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Solution

The fourth proportional to 251.53, 347.23 and 168.69 is: 232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.53 : 347.23 = 168.69 : x
  2. Step 2: Convert to fraction form
    251.53/347.23 = 168.69/x
  3. Step 3: Cross multiply
    251.53x = 347.23 × 168.69
  4. Step 4: Simplify right side
    251.53x = 58,573.81
  5. Step 5: Solve for x
    x = 58,573.81/251.53
  6. Step 6: Final answer
    x = 232.87

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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.