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Finding the Third Proportional to 841.50 and 1,306

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Solution

The third proportional to 841.50 and 1,306 is: 2,026.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.50 : 1,306 = 1,306 : x
  2. Step 2: Convert to fraction form
    841.50/1,306 = 1,306/x
  3. Step 3: Cross multiply
    841.50x = 1,306 × 1,306
  4. Step 4: Simplify right side
    841.50x = 1,705,636
  5. Step 5: Solve for x
    x = 1,705,636/841.50
  6. Step 6: Final answer
    x = 2,026.90

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.