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Finding the Fourth Proportional to 169.56, 254.52 and 153.72

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Solution

The fourth proportional to 169.56, 254.52 and 153.72 is: 230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.56 : 254.52 = 153.72 : x
  2. Step 2: Convert to fraction form
    169.56/254.52 = 153.72/x
  3. Step 3: Cross multiply
    169.56x = 254.52 × 153.72
  4. Step 4: Simplify right side
    169.56x = 39,124.81
  5. Step 5: Solve for x
    x = 39,124.81/169.56
  6. Step 6: Final answer
    x = 230.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.