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Finding the Third Proportional to 211.50 and 502.13

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Solution

The third proportional to 211.50 and 502.13 is: 1,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.50 : 502.13 = 502.13 : x
  2. Step 2: Convert to fraction form
    211.50/502.13 = 502.13/x
  3. Step 3: Cross multiply
    211.50x = 502.13 × 502.13
  4. Step 4: Simplify right side
    211.50x = 252,129.52
  5. Step 5: Solve for x
    x = 252,129.52/211.50
  6. Step 6: Final answer
    x = 1,192.10

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.