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Finding the Fourth Proportional to 483.28, 725.56 and 354.80

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Solution

The fourth proportional to 483.28, 725.56 and 354.80 is: 532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.28 : 725.56 = 354.80 : x
  2. Step 2: Convert to fraction form
    483.28/725.56 = 354.80/x
  3. Step 3: Cross multiply
    483.28x = 725.56 × 354.80
  4. Step 4: Simplify right side
    483.28x = 257,428.69
  5. Step 5: Solve for x
    x = 257,428.69/483.28
  6. Step 6: Final answer
    x = 532.67

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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.