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Finding the Fourth Proportional to 251.53, 347.17 and 153.37

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Solution

The fourth proportional to 251.53, 347.17 and 153.37 is: 211.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.53 : 347.17 = 153.37 : x
  2. Step 2: Convert to fraction form
    251.53/347.17 = 153.37/x
  3. Step 3: Cross multiply
    251.53x = 347.17 × 153.37
  4. Step 4: Simplify right side
    251.53x = 53,245.47
  5. Step 5: Solve for x
    x = 53,245.47/251.53
  6. Step 6: Final answer
    x = 211.69

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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.