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Finding the Fourth Proportional to 237.20, 353.39 and 225.58

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Solution

The fourth proportional to 237.20, 353.39 and 225.58 is: 336.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.20 : 353.39 = 225.58 : x
  2. Step 2: Convert to fraction form
    237.20/353.39 = 225.58/x
  3. Step 3: Cross multiply
    237.20x = 353.39 × 225.58
  4. Step 4: Simplify right side
    237.20x = 79,717.72
  5. Step 5: Solve for x
    x = 79,717.72/237.20
  6. Step 6: Final answer
    x = 336.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.