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Finding the Fourth Proportional to 170.99, 235.92 and 101.05

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Solution

The fourth proportional to 170.99, 235.92 and 101.05 is: 139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.99 : 235.92 = 101.05 : x
  2. Step 2: Convert to fraction form
    170.99/235.92 = 101.05/x
  3. Step 3: Cross multiply
    170.99x = 235.92 × 101.05
  4. Step 4: Simplify right side
    170.99x = 23,839.72
  5. Step 5: Solve for x
    x = 23,839.72/170.99
  6. Step 6: Final answer
    x = 139.42

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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.