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Finding the Fourth Proportional to 237.27, 356 and 129.05

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Solution

The fourth proportional to 237.27, 356 and 129.05 is: 193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.27 : 356 = 129.05 : x
  2. Step 2: Convert to fraction form
    237.27/356 = 129.05/x
  3. Step 3: Cross multiply
    237.27x = 356 × 129.05
  4. Step 4: Simplify right side
    237.27x = 45,941.80
  5. Step 5: Solve for x
    x = 45,941.80/237.27
  6. Step 6: Final answer
    x = 193.63

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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.