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Finding the Third Proportional to 771.38 and 1,130.06

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Solution

The third proportional to 771.38 and 1,130.06 is: 1,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    771.38 : 1,130.06 = 1,130.06 : x
  2. Step 2: Convert to fraction form
    771.38/1,130.06 = 1,130.06/x
  3. Step 3: Cross multiply
    771.38x = 1,130.06 × 1,130.06
  4. Step 4: Simplify right side
    771.38x = 1,277,041.25
  5. Step 5: Solve for x
    x = 1,277,041.25/771.38
  6. Step 6: Final answer
    x = 1,655.54

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.