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Finding the Fourth Proportional to 373.11, 515.06 and 223.80

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Solution

The fourth proportional to 373.11, 515.06 and 223.80 is: 308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.11 : 515.06 = 223.80 : x
  2. Step 2: Convert to fraction form
    373.11/515.06 = 223.80/x
  3. Step 3: Cross multiply
    373.11x = 515.06 × 223.80
  4. Step 4: Simplify right side
    373.11x = 115,270.43
  5. Step 5: Solve for x
    x = 115,270.43/373.11
  6. Step 6: Final answer
    x = 308.94

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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.