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Finding the Third Proportional to 251.25 and 538.50

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Solution

The third proportional to 251.25 and 538.50 is: 1,154.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.25 : 538.50 = 538.50 : x
  2. Step 2: Convert to fraction form
    251.25/538.50 = 538.50/x
  3. Step 3: Cross multiply
    251.25x = 538.50 × 538.50
  4. Step 4: Simplify right side
    251.25x = 289,982.25
  5. Step 5: Solve for x
    x = 289,982.25/251.25
  6. Step 6: Final answer
    x = 1,154.16

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.