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Finding the Fourth Proportional to 369.75, 510.24 and 222.39

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Solution

The fourth proportional to 369.75, 510.24 and 222.39 is: 306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.75 : 510.24 = 222.39 : x
  2. Step 2: Convert to fraction form
    369.75/510.24 = 222.39/x
  3. Step 3: Cross multiply
    369.75x = 510.24 × 222.39
  4. Step 4: Simplify right side
    369.75x = 113,472.27
  5. Step 5: Solve for x
    x = 113,472.27/369.75
  6. Step 6: Final answer
    x = 306.89

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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.