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Finding the Third Proportional to 905.55 and 1,315.62

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Solution

The third proportional to 905.55 and 1,315.62 is: 1,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.55 : 1,315.62 = 1,315.62 : x
  2. Step 2: Convert to fraction form
    905.55/1,315.62 = 1,315.62/x
  3. Step 3: Cross multiply
    905.55x = 1,315.62 × 1,315.62
  4. Step 4: Simplify right side
    905.55x = 1,730,848.58
  5. Step 5: Solve for x
    x = 1,730,848.58/905.55
  6. Step 6: Final answer
    x = 1,911.37

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.