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Finding the Third Proportional to 734 and 1,090

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Solution

The third proportional to 734 and 1,090 is: 1,618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    734 : 1,090 = 1,090 : x
  2. Step 2: Convert to fraction form
    734/1,090 = 1,090/x
  3. Step 3: Cross multiply
    734x = 1,090 × 1,090
  4. Step 4: Simplify right side
    734x = 1,188,100
  5. Step 5: Solve for x
    x = 1,188,100/734
  6. Step 6: Final answer
    x = 1,618.66

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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.