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Finding the Fourth Proportional to 240.51, 360.78 and 168.19

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Solution

The fourth proportional to 240.51, 360.78 and 168.19 is: 252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.51 : 360.78 = 168.19 : x
  2. Step 2: Convert to fraction form
    240.51/360.78 = 168.19/x
  3. Step 3: Cross multiply
    240.51x = 360.78 × 168.19
  4. Step 4: Simplify right side
    240.51x = 60,679.59
  5. Step 5: Solve for x
    x = 60,679.59/240.51
  6. Step 6: Final answer
    x = 252.30

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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.