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Finding the Fourth Proportional to 169.48, 252.78 and 164.35

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Solution

The fourth proportional to 169.48, 252.78 and 164.35 is: 245.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.48 : 252.78 = 164.35 : x
  2. Step 2: Convert to fraction form
    169.48/252.78 = 164.35/x
  3. Step 3: Cross multiply
    169.48x = 252.78 × 164.35
  4. Step 4: Simplify right side
    169.48x = 41,545.27
  5. Step 5: Solve for x
    x = 41,545.27/169.48
  6. Step 6: Final answer
    x = 245.14

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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.