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Finding the Third Proportional to 288.75 and 445.93

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Solution

The third proportional to 288.75 and 445.93 is: 688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.75 : 445.93 = 445.93 : x
  2. Step 2: Convert to fraction form
    288.75/445.93 = 445.93/x
  3. Step 3: Cross multiply
    288.75x = 445.93 × 445.93
  4. Step 4: Simplify right side
    288.75x = 198,856.77
  5. Step 5: Solve for x
    x = 198,856.77/288.75
  6. Step 6: Final answer
    x = 688.68

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.