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Finding the Fourth Proportional to 248.26, 372.10 and 171.25

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Solution

The fourth proportional to 248.26, 372.10 and 171.25 is: 256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.26 : 372.10 = 171.25 : x
  2. Step 2: Convert to fraction form
    248.26/372.10 = 171.25/x
  3. Step 3: Cross multiply
    248.26x = 372.10 × 171.25
  4. Step 4: Simplify right side
    248.26x = 63,722.13
  5. Step 5: Solve for x
    x = 63,722.13/248.26
  6. Step 6: Final answer
    x = 256.67

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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.