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Finding the Fourth Proportional to 170.28, 253.72 and 151.85

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Solution

The fourth proportional to 170.28, 253.72 and 151.85 is: 226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.28 : 253.72 = 151.85 : x
  2. Step 2: Convert to fraction form
    170.28/253.72 = 151.85/x
  3. Step 3: Cross multiply
    170.28x = 253.72 × 151.85
  4. Step 4: Simplify right side
    170.28x = 38,527.38
  5. Step 5: Solve for x
    x = 38,527.38/170.28
  6. Step 6: Final answer
    x = 226.26

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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.