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Finding the Third Proportional to 514.90 and 761.27

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Solution

The third proportional to 514.90 and 761.27 is: 1,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.90 : 761.27 = 761.27 : x
  2. Step 2: Convert to fraction form
    514.90/761.27 = 761.27/x
  3. Step 3: Cross multiply
    514.90x = 761.27 × 761.27
  4. Step 4: Simplify right side
    514.90x = 579,537.25
  5. Step 5: Solve for x
    x = 579,537.25/514.90
  6. Step 6: Final answer
    x = 1,125.54

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.