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Finding the Third Proportional to 661.92 and 1,015.35

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Solution

The third proportional to 661.92 and 1,015.35 is: 1,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.92 : 1,015.35 = 1,015.35 : x
  2. Step 2: Convert to fraction form
    661.92/1,015.35 = 1,015.35/x
  3. Step 3: Cross multiply
    661.92x = 1,015.35 × 1,015.35
  4. Step 4: Simplify right side
    661.92x = 1,030,930.86
  5. Step 5: Solve for x
    x = 1,030,930.86/661.92
  6. Step 6: Final answer
    x = 1,557.48

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.