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Finding the Third Proportional to 653.75 and 1,398.63

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Solution

The third proportional to 653.75 and 1,398.63 is: 2,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.75 : 1,398.63 = 1,398.63 : x
  2. Step 2: Convert to fraction form
    653.75/1,398.63 = 1,398.63/x
  3. Step 3: Cross multiply
    653.75x = 1,398.63 × 1,398.63
  4. Step 4: Simplify right side
    653.75x = 1,956,151.89
  5. Step 5: Solve for x
    x = 1,956,151.89/653.75
  6. Step 6: Final answer
    x = 2,992.20

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.