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Finding the Third Proportional to 510.75 and 758.63

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Solution

The third proportional to 510.75 and 758.63 is: 1,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.75 : 758.63 = 758.63 : x
  2. Step 2: Convert to fraction form
    510.75/758.63 = 758.63/x
  3. Step 3: Cross multiply
    510.75x = 758.63 × 758.63
  4. Step 4: Simplify right side
    510.75x = 575,511.89
  5. Step 5: Solve for x
    x = 575,511.89/510.75
  6. Step 6: Final answer
    x = 1,126.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.