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Finding the Fourth Proportional to 608.88, 911.88 and 480.72

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Solution

The fourth proportional to 608.88, 911.88 and 480.72 is: 719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.88 : 911.88 = 480.72 : x
  2. Step 2: Convert to fraction form
    608.88/911.88 = 480.72/x
  3. Step 3: Cross multiply
    608.88x = 911.88 × 480.72
  4. Step 4: Simplify right side
    608.88x = 438,358.95
  5. Step 5: Solve for x
    x = 438,358.95/608.88
  6. Step 6: Final answer
    x = 719.94

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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.