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Finding the Fourth Proportional to 170, 234.59 and 100.03

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Solution

The fourth proportional to 170, 234.59 and 100.03 is: 138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170 : 234.59 = 100.03 : x
  2. Step 2: Convert to fraction form
    170/234.59 = 100.03/x
  3. Step 3: Cross multiply
    170x = 234.59 × 100.03
  4. Step 4: Simplify right side
    170x = 23,466.04
  5. Step 5: Solve for x
    x = 23,466.04/170
  6. Step 6: Final answer
    x = 138.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.