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Finding the Third Proportional to 787.50 and 1,173.66

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Solution

The third proportional to 787.50 and 1,173.66 is: 1,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    787.50 : 1,173.66 = 1,173.66 : x
  2. Step 2: Convert to fraction form
    787.50/1,173.66 = 1,173.66/x
  3. Step 3: Cross multiply
    787.50x = 1,173.66 × 1,173.66
  4. Step 4: Simplify right side
    787.50x = 1,377,468.99
  5. Step 5: Solve for x
    x = 1,377,468.99/787.50
  6. Step 6: Final answer
    x = 1,749.17

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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.