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Finding the Third Proportional to 770.50 and 1,254.75

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Solution

The third proportional to 770.50 and 1,254.75 is: 2,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.50 : 1,254.75 = 1,254.75 : x
  2. Step 2: Convert to fraction form
    770.50/1,254.75 = 1,254.75/x
  3. Step 3: Cross multiply
    770.50x = 1,254.75 × 1,254.75
  4. Step 4: Simplify right side
    770.50x = 1,574,397.56
  5. Step 5: Solve for x
    x = 1,574,397.56/770.50
  6. Step 6: Final answer
    x = 2,043.35

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.