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Finding the Third Proportional to 261.50 and 375.25

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Solution

The third proportional to 261.50 and 375.25 is: 538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.50 : 375.25 = 375.25 : x
  2. Step 2: Convert to fraction form
    261.50/375.25 = 375.25/x
  3. Step 3: Cross multiply
    261.50x = 375.25 × 375.25
  4. Step 4: Simplify right side
    261.50x = 140,812.56
  5. Step 5: Solve for x
    x = 140,812.56/261.50
  6. Step 6: Final answer
    x = 538.48

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.