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Finding the Third Proportional to 212 and 492.50

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Solution

The third proportional to 212 and 492.50 is: 1,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212 : 492.50 = 492.50 : x
  2. Step 2: Convert to fraction form
    212/492.50 = 492.50/x
  3. Step 3: Cross multiply
    212x = 492.50 × 492.50
  4. Step 4: Simplify right side
    212x = 242,556.25
  5. Step 5: Solve for x
    x = 242,556.25/212
  6. Step 6: Final answer
    x = 1,144.13

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.