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Finding the Fourth Proportional to 169.65, 255.40 and 154.53

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Solution

The fourth proportional to 169.65, 255.40 and 154.53 is: 232.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.65 : 255.40 = 154.53 : x
  2. Step 2: Convert to fraction form
    169.65/255.40 = 154.53/x
  3. Step 3: Cross multiply
    169.65x = 255.40 × 154.53
  4. Step 4: Simplify right side
    169.65x = 39,466.58
  5. Step 5: Solve for x
    x = 39,466.58/169.65
  6. Step 6: Final answer
    x = 232.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.