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Finding the Fourth Proportional to 373.30, 515.10 and 225.88

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Solution

The fourth proportional to 373.30, 515.10 and 225.88 is: 311.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.30 : 515.10 = 225.88 : x
  2. Step 2: Convert to fraction form
    373.30/515.10 = 225.88/x
  3. Step 3: Cross multiply
    373.30x = 515.10 × 225.88
  4. Step 4: Simplify right side
    373.30x = 116,350.79
  5. Step 5: Solve for x
    x = 116,350.79/373.30
  6. Step 6: Final answer
    x = 311.68

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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.