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Finding the Fourth Proportional to 616.28, 925.02 and 480.80

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Solution

The fourth proportional to 616.28, 925.02 and 480.80 is: 721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.28 : 925.02 = 480.80 : x
  2. Step 2: Convert to fraction form
    616.28/925.02 = 480.80/x
  3. Step 3: Cross multiply
    616.28x = 925.02 × 480.80
  4. Step 4: Simplify right side
    616.28x = 444,749.62
  5. Step 5: Solve for x
    x = 444,749.62/616.28
  6. Step 6: Final answer
    x = 721.67

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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.