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Finding the Third Proportional to 1,080 and 1,455.75

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Solution

The third proportional to 1,080 and 1,455.75 is: 1,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080 : 1,455.75 = 1,455.75 : x
  2. Step 2: Convert to fraction form
    1,080/1,455.75 = 1,455.75/x
  3. Step 3: Cross multiply
    1,080x = 1,455.75 × 1,455.75
  4. Step 4: Simplify right side
    1,080x = 2,119,208.06
  5. Step 5: Solve for x
    x = 2,119,208.06/1,080
  6. Step 6: Final answer
    x = 1,962.23

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.