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Finding the Fourth Proportional to 435.39, 653.09 and 110.79

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Solution

The fourth proportional to 435.39, 653.09 and 110.79 is: 166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.39 : 653.09 = 110.79 : x
  2. Step 2: Convert to fraction form
    435.39/653.09 = 110.79/x
  3. Step 3: Cross multiply
    435.39x = 653.09 × 110.79
  4. Step 4: Simplify right side
    435.39x = 72,355.29
  5. Step 5: Solve for x
    x = 72,355.29/435.39
  6. Step 6: Final answer
    x = 166.19

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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.