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Finding the Fourth Proportional to 237.51, 327.96 and 154.80

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Solution

The fourth proportional to 237.51, 327.96 and 154.80 is: 213.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.51 : 327.96 = 154.80 : x
  2. Step 2: Convert to fraction form
    237.51/327.96 = 154.80/x
  3. Step 3: Cross multiply
    237.51x = 327.96 × 154.80
  4. Step 4: Simplify right side
    237.51x = 50,768.21
  5. Step 5: Solve for x
    x = 50,768.21/237.51
  6. Step 6: Final answer
    x = 213.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.