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Finding the Fourth Proportional to 251.79, 375.77 and 245.31

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Solution

The fourth proportional to 251.79, 375.77 and 245.31 is: 366.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.79 : 375.77 = 245.31 : x
  2. Step 2: Convert to fraction form
    251.79/375.77 = 245.31/x
  3. Step 3: Cross multiply
    251.79x = 375.77 × 245.31
  4. Step 4: Simplify right side
    251.79x = 92,177.03
  5. Step 5: Solve for x
    x = 92,177.03/251.79
  6. Step 6: Final answer
    x = 366.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.