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Finding the Fourth Proportional to 251.53, 347.25 and 192.40

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Solution

The fourth proportional to 251.53, 347.25 and 192.40 is: 265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.53 : 347.25 = 192.40 : x
  2. Step 2: Convert to fraction form
    251.53/347.25 = 192.40/x
  3. Step 3: Cross multiply
    251.53x = 347.25 × 192.40
  4. Step 4: Simplify right side
    251.53x = 66,811.33
  5. Step 5: Solve for x
    x = 66,811.33/251.53
  6. Step 6: Final answer
    x = 265.62

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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.