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Finding the Fourth Proportional to 251.55, 347.15 and 141.02

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Solution

The fourth proportional to 251.55, 347.15 and 141.02 is: 194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.55 : 347.15 = 141.02 : x
  2. Step 2: Convert to fraction form
    251.55/347.15 = 141.02/x
  3. Step 3: Cross multiply
    251.55x = 347.15 × 141.02
  4. Step 4: Simplify right side
    251.55x = 48,955.09
  5. Step 5: Solve for x
    x = 48,955.09/251.55
  6. Step 6: Final answer
    x = 194.61

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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.