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Finding the Fourth Proportional to 1,266.97, 1,900.47 and 573.50

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Solution

The fourth proportional to 1,266.97, 1,900.47 and 573.50 is: 860.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.97 : 1,900.47 = 573.50 : x
  2. Step 2: Convert to fraction form
    1,266.97/1,900.47 = 573.50/x
  3. Step 3: Cross multiply
    1,266.97x = 1,900.47 × 573.50
  4. Step 4: Simplify right side
    1,266.97x = 1,089,919.55
  5. Step 5: Solve for x
    x = 1,089,919.55/1,266.97
  6. Step 6: Final answer
    x = 860.26

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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.