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Finding the Fourth Proportional to 1,274.44, 1,911.02 and 452.60

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Solution

The fourth proportional to 1,274.44, 1,911.02 and 452.60 is: 678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.44 : 1,911.02 = 452.60 : x
  2. Step 2: Convert to fraction form
    1,274.44/1,911.02 = 452.60/x
  3. Step 3: Cross multiply
    1,274.44x = 1,911.02 × 452.60
  4. Step 4: Simplify right side
    1,274.44x = 864,927.65
  5. Step 5: Solve for x
    x = 864,927.65/1,274.44
  6. Step 6: Final answer
    x = 678.67

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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.