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Finding the Third Proportional to 521.81 and 1,157.06

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Solution

The third proportional to 521.81 and 1,157.06 is: 2,565.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.81 : 1,157.06 = 1,157.06 : x
  2. Step 2: Convert to fraction form
    521.81/1,157.06 = 1,157.06/x
  3. Step 3: Cross multiply
    521.81x = 1,157.06 × 1,157.06
  4. Step 4: Simplify right side
    521.81x = 1,338,793.63
  5. Step 5: Solve for x
    x = 1,338,793.63/521.81
  6. Step 6: Final answer
    x = 2,565.66

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.