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Finding the Third Proportional to 745.31 and 1,064.81

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Solution

The third proportional to 745.31 and 1,064.81 is: 1,521.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.31 : 1,064.81 = 1,064.81 : x
  2. Step 2: Convert to fraction form
    745.31/1,064.81 = 1,064.81/x
  3. Step 3: Cross multiply
    745.31x = 1,064.81 × 1,064.81
  4. Step 4: Simplify right side
    745.31x = 1,133,825.66
  5. Step 5: Solve for x
    x = 1,133,825.66/745.31
  6. Step 6: Final answer
    x = 1,521.28

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.