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Finding the Fourth Proportional to 170.11, 253.52 and 169.84

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Solution

The fourth proportional to 170.11, 253.52 and 169.84 is: 253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.11 : 253.52 = 169.84 : x
  2. Step 2: Convert to fraction form
    170.11/253.52 = 169.84/x
  3. Step 3: Cross multiply
    170.11x = 253.52 × 169.84
  4. Step 4: Simplify right side
    170.11x = 43,056.78
  5. Step 5: Solve for x
    x = 43,056.78/170.11
  6. Step 6: Final answer
    x = 253.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.