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Finding the Third Proportional to 672.38 and 1,133.06

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Solution

The third proportional to 672.38 and 1,133.06 is: 1,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.38 : 1,133.06 = 1,133.06 : x
  2. Step 2: Convert to fraction form
    672.38/1,133.06 = 1,133.06/x
  3. Step 3: Cross multiply
    672.38x = 1,133.06 × 1,133.06
  4. Step 4: Simplify right side
    672.38x = 1,283,830.63
  5. Step 5: Solve for x
    x = 1,283,830.63/672.38
  6. Step 6: Final answer
    x = 1,909.40

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.