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Finding the Fourth Proportional to 1,033.75, 1,551.17 and 513.60

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Solution

The fourth proportional to 1,033.75, 1,551.17 and 513.60 is: 770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.75 : 1,551.17 = 513.60 : x
  2. Step 2: Convert to fraction form
    1,033.75/1,551.17 = 513.60/x
  3. Step 3: Cross multiply
    1,033.75x = 1,551.17 × 513.60
  4. Step 4: Simplify right side
    1,033.75x = 796,680.91
  5. Step 5: Solve for x
    x = 796,680.91/1,033.75
  6. Step 6: Final answer
    x = 770.67

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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.