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Finding the Fourth Proportional to 250.79, 375.45 and 163.88

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Solution

The fourth proportional to 250.79, 375.45 and 163.88 is: 245.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.79 : 375.45 = 163.88 : x
  2. Step 2: Convert to fraction form
    250.79/375.45 = 163.88/x
  3. Step 3: Cross multiply
    250.79x = 375.45 × 163.88
  4. Step 4: Simplify right side
    250.79x = 61,526.87
  5. Step 5: Solve for x
    x = 61,526.87/250.79
  6. Step 6: Final answer
    x = 245.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.