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Finding the Third Proportional to 435.69 and 653.54

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Solution

The third proportional to 435.69 and 653.54 is: 980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.69 : 653.54 = 653.54 : x
  2. Step 2: Convert to fraction form
    435.69/653.54 = 653.54/x
  3. Step 3: Cross multiply
    435.69x = 653.54 × 653.54
  4. Step 4: Simplify right side
    435.69x = 427,110.75
  5. Step 5: Solve for x
    x = 427,110.75/435.69
  6. Step 6: Final answer
    x = 980.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.