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Finding the Fourth Proportional to 237.22, 355.53 and 212.92

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Solution

The fourth proportional to 237.22, 355.53 and 212.92 is: 319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.22 : 355.53 = 212.92 : x
  2. Step 2: Convert to fraction form
    237.22/355.53 = 212.92/x
  3. Step 3: Cross multiply
    237.22x = 355.53 × 212.92
  4. Step 4: Simplify right side
    237.22x = 75,699.45
  5. Step 5: Solve for x
    x = 75,699.45/237.22
  6. Step 6: Final answer
    x = 319.11

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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.