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Finding the Fourth Proportional to 170.17, 253.97 and 158.61

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Solution

The fourth proportional to 170.17, 253.97 and 158.61 is: 236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.17 : 253.97 = 158.61 : x
  2. Step 2: Convert to fraction form
    170.17/253.97 = 158.61/x
  3. Step 3: Cross multiply
    170.17x = 253.97 × 158.61
  4. Step 4: Simplify right side
    170.17x = 40,282.18
  5. Step 5: Solve for x
    x = 40,282.18/170.17
  6. Step 6: Final answer
    x = 236.72

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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.