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Finding the Fourth Proportional to 251.37, 346.90 and 177.71

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Solution

The fourth proportional to 251.37, 346.90 and 177.71 is: 245.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.37 : 346.90 = 177.71 : x
  2. Step 2: Convert to fraction form
    251.37/346.90 = 177.71/x
  3. Step 3: Cross multiply
    251.37x = 346.90 × 177.71
  4. Step 4: Simplify right side
    251.37x = 61,647.60
  5. Step 5: Solve for x
    x = 61,647.60/251.37
  6. Step 6: Final answer
    x = 245.25

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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.