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Finding the Fourth Proportional to 373.85, 515.81 and 226.61

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Solution

The fourth proportional to 373.85, 515.81 and 226.61 is: 312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.85 : 515.81 = 226.61 : x
  2. Step 2: Convert to fraction form
    373.85/515.81 = 226.61/x
  3. Step 3: Cross multiply
    373.85x = 515.81 × 226.61
  4. Step 4: Simplify right side
    373.85x = 116,886.57
  5. Step 5: Solve for x
    x = 116,886.57/373.85
  6. Step 6: Final answer
    x = 312.66

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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.