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Finding the Fourth Proportional to 369.55, 553.89 and 237.61

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Solution

The fourth proportional to 369.55, 553.89 and 237.61 is: 356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.55 : 553.89 = 237.61 : x
  2. Step 2: Convert to fraction form
    369.55/553.89 = 237.61/x
  3. Step 3: Cross multiply
    369.55x = 553.89 × 237.61
  4. Step 4: Simplify right side
    369.55x = 131,609.80
  5. Step 5: Solve for x
    x = 131,609.80/369.55
  6. Step 6: Final answer
    x = 356.14

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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.