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Finding the Fourth Proportional to 360.75, 540.48 and 308.89

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Solution

The fourth proportional to 360.75, 540.48 and 308.89 is: 462.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.75 : 540.48 = 308.89 : x
  2. Step 2: Convert to fraction form
    360.75/540.48 = 308.89/x
  3. Step 3: Cross multiply
    360.75x = 540.48 × 308.89
  4. Step 4: Simplify right side
    360.75x = 166,948.29
  5. Step 5: Solve for x
    x = 166,948.29/360.75
  6. Step 6: Final answer
    x = 462.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.