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Finding the Fourth Proportional to 169.92, 253.48 and 158.28

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Solution

The fourth proportional to 169.92, 253.48 and 158.28 is: 236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.92 : 253.48 = 158.28 : x
  2. Step 2: Convert to fraction form
    169.92/253.48 = 158.28/x
  3. Step 3: Cross multiply
    169.92x = 253.48 × 158.28
  4. Step 4: Simplify right side
    169.92x = 40,120.81
  5. Step 5: Solve for x
    x = 40,120.81/169.92
  6. Step 6: Final answer
    x = 236.12

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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.