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Finding the Third Proportional to 216.88 and 501.88

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Solution

The third proportional to 216.88 and 501.88 is: 1,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.88 : 501.88 = 501.88 : x
  2. Step 2: Convert to fraction form
    216.88/501.88 = 501.88/x
  3. Step 3: Cross multiply
    216.88x = 501.88 × 501.88
  4. Step 4: Simplify right side
    216.88x = 251,878.52
  5. Step 5: Solve for x
    x = 251,878.52/216.88
  6. Step 6: Final answer
    x = 1,161.40

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.