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Finding the Third Proportional to 745.45 and 1,590.05

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Solution

The third proportional to 745.45 and 1,590.05 is: 3,391.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    745.45 : 1,590.05 = 1,590.05 : x
  2. Step 2: Convert to fraction form
    745.45/1,590.05 = 1,590.05/x
  3. Step 3: Cross multiply
    745.45x = 1,590.05 × 1,590.05
  4. Step 4: Simplify right side
    745.45x = 2,528,249.06
  5. Step 5: Solve for x
    x = 2,528,249.06/745.45
  6. Step 6: Final answer
    x = 3,391.56

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.