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Finding the Fourth Proportional to 373.29, 515.04 and 255.05

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Solution

The fourth proportional to 373.29, 515.04 and 255.05 is: 351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.29 : 515.04 = 255.05 : x
  2. Step 2: Convert to fraction form
    373.29/515.04 = 255.05/x
  3. Step 3: Cross multiply
    373.29x = 515.04 × 255.05
  4. Step 4: Simplify right side
    373.29x = 131,360.95
  5. Step 5: Solve for x
    x = 131,360.95/373.29
  6. Step 6: Final answer
    x = 351.90

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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.