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Finding the Fourth Proportional to 369.79, 510.19 and 222.37

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Solution

The fourth proportional to 369.79, 510.19 and 222.37 is: 306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.79 : 510.19 = 222.37 : x
  2. Step 2: Convert to fraction form
    369.79/510.19 = 222.37/x
  3. Step 3: Cross multiply
    369.79x = 510.19 × 222.37
  4. Step 4: Simplify right side
    369.79x = 113,449.12
  5. Step 5: Solve for x
    x = 113,449.12/369.79
  6. Step 6: Final answer
    x = 306.80

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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.