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Finding the Fourth Proportional to 237.78, 328.08 and 144.54

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Solution

The fourth proportional to 237.78, 328.08 and 144.54 is: 199.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.78 : 328.08 = 144.54 : x
  2. Step 2: Convert to fraction form
    237.78/328.08 = 144.54/x
  3. Step 3: Cross multiply
    237.78x = 328.08 × 144.54
  4. Step 4: Simplify right side
    237.78x = 47,420.68
  5. Step 5: Solve for x
    x = 47,420.68/237.78
  6. Step 6: Final answer
    x = 199.43

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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.